[Website] Add release note for 1.0.1 (#73)

diff --git a/_data/versions.yml b/_data/versions.yml
index b08598f..13ec8e9 100644
--- a/_data/versions.yml
+++ b/_data/versions.yml
@@ -16,16 +16,16 @@
 # Database of the current version
 #
 current:
-  number: '1.0.0'
+  number: '1.0.1'
   pinned_number: '1.0.*'
-  date: '24 July 2020'
-  git-tag: 'b0d623957db820de4f1ff0a5ebd3e888194a48f0'
-  github-tag-link: 'https://github.com/apache/arrow/releases/tag/apache-arrow-1.0.0'
-  release-notes: 'https://arrow.apache.org/release/1.0.0.html'
-  mirrors: 'https://www.apache.org/dyn/closer.lua/arrow/arrow-1.0.0/'
-  tarball_name: 'apache-arrow-1.0.0.tar.gz'
-  mirrors-tar: 'https://www.apache.org/dyn/closer.lua/arrow/arrow-1.0.0/apache-arrow-1.0.0.tar.gz'
-  java-artifacts: 'http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.apache.arrow%22%20AND%20v%3A%221.0.0%22'
-  asc: 'https://downloads.apache.org/arrow/arrow-1.0.0/apache-arrow-1.0.0.tar.gz.asc'
-  sha256: 'https://downloads.apache.org/arrow/arrow-1.0.0/apache-arrow-1.0.0.tar.gz.sha256'
-  sha512: 'https://downloads.apache.org/arrow/arrow-1.0.0/apache-arrow-1.0.0.tar.gz.sha512'
+  date: '21 August 2020'
+  git-tag: '886d87bdea78ce80e39a4b5b6fd6ca6042474c5f'
+  github-tag-link: 'https://github.com/apache/arrow/releases/tag/apache-arrow-1.0.1'
+  release-notes: 'https://arrow.apache.org/release/1.0.1.html'
+  mirrors: 'https://www.apache.org/dyn/closer.lua/arrow/arrow-1.0.1/'
+  tarball_name: 'apache-arrow-1.0.1.tar.gz'
+  mirrors-tar: 'https://www.apache.org/dyn/closer.lua/arrow/arrow-1.0.1/apache-arrow-1.0.1.tar.gz'
+  java-artifacts: 'http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.apache.arrow%22%20AND%20v%3A%221.0.1%22'
+  asc: 'https://downloads.apache.org/arrow/arrow-1.0.1/apache-arrow-1.0.1.tar.gz.asc'
+  sha256: 'https://downloads.apache.org/arrow/arrow-1.0.1/apache-arrow-1.0.1.tar.gz.sha256'
+  sha512: 'https://downloads.apache.org/arrow/arrow-1.0.1/apache-arrow-1.0.1.tar.gz.sha512'
diff --git a/_release/1.0.1.md b/_release/1.0.1.md
new file mode 100644
index 0000000..fbb2f5e
--- /dev/null
+++ b/_release/1.0.1.md
@@ -0,0 +1,123 @@
+---
+layout: default
+title: Apache Arrow 1.0.1 Release
+permalink: /release/1.0.1.html
+---
+<!--
+{% comment %}
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to you under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License.  You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+{% endcomment %}
+-->
+
+# Apache Arrow 1.0.1 (21 August 2020)
+
+This is a patch release addressing bugs in the 1.0.0 release.
+
+## Download
+
+* [**Source Artifacts**][1]
+* **Binary Artifacts**
+  * [For CentOS][2]
+  * [For Debian][3]
+  * [For Python][4]
+  * [For Ubuntu][5]
+* [Git tag][6]
+
+## Contributors
+
+This release includes 39 commits from 15 distinct contributors.
+
+```console
+$ git shortlog -sn apache-arrow-1.0.0..apache-arrow-1.0.1
+     9	Krisztián Szűcs
+     8	Neal Richardson
+     4	Benjamin Kietzman
+     3	Andy Grove
+     3	Antoine Pitrou
+     3	Uwe L. Korn
+     1	Jorge C. Leitao
+     1	Joris Van den Bossche
+     1	Mahmut Bulut
+     1	Matthias
+     1	Micah Kornfield
+     1	alamb
+     1	mubai
+     1	offthewall123
+     1	ptaylor
+```
+
+## Patch Committers
+
+The following Apache committers merged contributed patches to the repository.
+
+```console
+$ git shortlog -csn apache-arrow-1.0.0..apache-arrow-1.0.1
+    39	Krisztián Szűcs
+```
+
+## Changelog
+
+
+## Apache Arrow 1.0.1 (2020-08-21)
+
+### Bug Fixes
+
+* [ARROW-9535](https://issues.apache.org/jira/browse/ARROW-9535) - [Python] Remove symlink fixes from conda recipe
+* [ARROW-9536](https://issues.apache.org/jira/browse/ARROW-9536) - Missing parameters in PlasmaOutOfMemoryException.java
+* [ARROW-9544](https://issues.apache.org/jira/browse/ARROW-9544) - [R] version argument of write\_parquet not working
+* [ARROW-9549](https://issues.apache.org/jira/browse/ARROW-9549) - [Rust] Parquet no longer builds
+* [ARROW-9556](https://issues.apache.org/jira/browse/ARROW-9556) - [Python][C++] Segfaults in UnionArray with null values
+* [ARROW-9560](https://issues.apache.org/jira/browse/ARROW-9560) - [Packaging] conda recipes failing due to missing conda-forge.yml
+* [ARROW-9569](https://issues.apache.org/jira/browse/ARROW-9569) - [CI][R] Fix rtools35 builds for msys2 key change
+* [ARROW-9570](https://issues.apache.org/jira/browse/ARROW-9570) - [Doc] Clean up sphinx sidebar
+* [ARROW-9573](https://issues.apache.org/jira/browse/ARROW-9573) - [Python] Parquet doesn't load when partitioned column starts with '\_'
+* [ARROW-9574](https://issues.apache.org/jira/browse/ARROW-9574) - [R] Cleanups for CRAN 1.0.0 release
+* [ARROW-9575](https://issues.apache.org/jira/browse/ARROW-9575) - [R] gcc-UBSAN failure on CRAN
+* [ARROW-9577](https://issues.apache.org/jira/browse/ARROW-9577) - [Python][C++] posix\_madvise error on Debian in pyarrow 1.0.0
+* [ARROW-9589](https://issues.apache.org/jira/browse/ARROW-9589) - [C++/R] arrow\_exports.h contains structs declared as class
+* [ARROW-9592](https://issues.apache.org/jira/browse/ARROW-9592) - [CI] Update homebrew before calling brew bundle
+* [ARROW-9596](https://issues.apache.org/jira/browse/ARROW-9596) - [CI][Crossbow] Fix homebrew-cpp again, again
+* [ARROW-9598](https://issues.apache.org/jira/browse/ARROW-9598) - [C++][Parquet]  Spaced definition levels is not assigned correctly.
+* [ARROW-9599](https://issues.apache.org/jira/browse/ARROW-9599) - [CI] Appveyor toolchain build fails because CMake detects different C and C++ compilers
+* [ARROW-9600](https://issues.apache.org/jira/browse/ARROW-9600) - [Rust] When used as a crate dependency, arrow-flight is rebuilt on every invocation of cargo build
+* [ARROW-9600](https://issues.apache.org/jira/browse/ARROW-9600) - [Rust] When used as a crate dependency, arrow-flight is rebuilt on every invocation of cargo build
+* [ARROW-9602](https://issues.apache.org/jira/browse/ARROW-9602) - [R] Improve cmake detection in Linux build
+* [ARROW-9606](https://issues.apache.org/jira/browse/ARROW-9606) - [C++][Dataset] in expressions don't work with \>1 partition levels
+* [ARROW-9609](https://issues.apache.org/jira/browse/ARROW-9609) - [C++] CSV datasets don't materialize virtual columns
+* [ARROW-9621](https://issues.apache.org/jira/browse/ARROW-9621) - [Python] test\_move\_file() is failed with fsspec 0.8.0
+* [ARROW-9631](https://issues.apache.org/jira/browse/ARROW-9631) - [Rust] Arrow crate should not depend on flight
+* [ARROW-9631](https://issues.apache.org/jira/browse/ARROW-9631) - [Rust] Arrow crate should not depend on flight
+* [ARROW-9644](https://issues.apache.org/jira/browse/ARROW-9644) - [C++][Dataset] Do not check for ignore\_prefixes in the base path
+* [ARROW-9659](https://issues.apache.org/jira/browse/ARROW-9659) - [C++] RecordBatchStreamReader throws on CUDA device buffers
+* [ARROW-9684](https://issues.apache.org/jira/browse/ARROW-9684) - [C++] Fix undefined behaviour on invalid IPC / Parquet input (OSS-Fuzz)
+* [ARROW-9700](https://issues.apache.org/jira/browse/ARROW-9700) - [Python] create\_library\_symlinks doesn't work in macos
+* [ARROW-9712](https://issues.apache.org/jira/browse/ARROW-9712) - [Rust] [DataFusion] ParquetScanExec panics on error
+* [ARROW-9743](https://issues.apache.org/jira/browse/ARROW-9743) - [R] Sanitize paths in open\_dataset
+
+
+### New Features and Improvements
+
+* [ARROW-9402](https://issues.apache.org/jira/browse/ARROW-9402) - [C++] Add portable wrappers for \_\_builtin\_add\_overflow and friends
+* [ARROW-9563](https://issues.apache.org/jira/browse/ARROW-9563) - [Dev][Release] Use archery's changelog generator when creating release notes for the website 
+* [ARROW-9715](https://issues.apache.org/jira/browse/ARROW-9715) - [R] changelog/doc updates for 1.0.1
+
+
+[1]: https://www.apache.org/dyn/closer.lua/arrow/arrow-1.0.1/
+[2]: https://bintray.com/apache/arrow/centos/1.0.1/
+[3]: https://bintray.com/apache/arrow/debian/1.0.1/
+[4]: https://bintray.com/apache/arrow/python/1.0.1/
+[5]: https://bintray.com/apache/arrow/ubuntu/1.0.1/
+[6]: https://github.com/apache/arrow/releases/tag/apache-arrow-1.0.1
diff --git a/_release/index.md b/_release/index.md
index 986787b..ed38996 100644
--- a/_release/index.md
+++ b/_release/index.md
@@ -26,52 +26,54 @@
 
 Navigate to the release page for downloads and the changelog.
 
-* [1.0.0 (24 July 2020)][1]
-* [0.17.1 (18 May 2020)][2]
-* [0.17.0 (20 April 2020)][3]
-* [0.16.0 (7 February 2020)][4]
-* [0.15.1 (1 November 2019)][5]
-* [0.15.0 (5 October 2019)][6]
-* [0.14.1 (22 July 2019)][7]
-* [0.14.0 (4 July 2019)][8]
-* [0.13.0 (1 April 2019)][9]
-* [0.12.0 (20 January 2019)][10]
-* [0.11.1 (19 October 2018)][11]
-* [0.11.0 (8 October 2018)][12]
-* [0.10.0 (6 August 2018)][13]
-* [0.9.0 (21 March 2018)][14]
-* [0.8.0 (18 December 2017)][15]
-* [0.7.1 (1 October 2017)][16]
-* [0.7.0 (17 September 2017)][17]
-* [0.6.0 (14 August 2017)][18]
-* [0.5.0 (23 July 2017)][19]
-* [0.4.1 (9 June 2017)][20]
-* [0.4.0 (22 May 2017)][21]
-* [0.3.0 (5 May 2017)][22]
-* [0.2.0 (18 February 2017)][23]
-* [0.1.0 (10 October 2016)][24]
+* [1.0.1 (21 August 2020)][1]
+* [1.0.0 (24 July 2020)][2]
+* [0.17.1 (18 May 2020)][3]
+* [0.17.0 (20 April 2020)][4]
+* [0.16.0 (7 February 2020)][5]
+* [0.15.1 (1 November 2019)][6]
+* [0.15.0 (5 October 2019)][7]
+* [0.14.1 (22 July 2019)][8]
+* [0.14.0 (4 July 2019)][9]
+* [0.13.0 (1 April 2019)][10]
+* [0.12.0 (20 January 2019)][11]
+* [0.11.1 (19 October 2018)][12]
+* [0.11.0 (8 October 2018)][13]
+* [0.10.0 (6 August 2018)][14]
+* [0.9.0 (21 March 2018)][15]
+* [0.8.0 (18 December 2017)][16]
+* [0.7.1 (1 October 2017)][17]
+* [0.7.0 (17 September 2017)][18]
+* [0.6.0 (14 August 2017)][19]
+* [0.5.0 (23 July 2017)][20]
+* [0.4.1 (9 June 2017)][21]
+* [0.4.0 (22 May 2017)][22]
+* [0.3.0 (5 May 2017)][23]
+* [0.2.0 (18 February 2017)][24]
+* [0.1.0 (10 October 2016)][25]
 
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+[2]: {{ site.baseurl }}/release/1.0.0.html
+[3]: {{ site.baseurl }}/release/0.17.1.html
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