Preparing hbase release 2.6.0RC2; tagging and updates to CHANGES.md and RELEASENOTES.md

Signed-off-by: Bryan Beaudreault <bbeaudreault@apache.org>
diff --git a/CHANGES.md b/CHANGES.md
index 64a6b09..e5468a7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -18,7 +18,7 @@
 -->
 # HBASE Changelog
 
-## Release 2.6.0 - Unreleased (as of 2024-03-22)
+## Release 2.6.0 - Unreleased (as of 2024-03-27)
 
 
 
@@ -222,6 +222,7 @@
 | [HBASE-28427](https://issues.apache.org/jira/browse/HBASE-28427) | FNFE related to 'master:store' when moving archived hfiles to global archived dir |  Minor | master |
 | [HBASE-28124](https://issues.apache.org/jira/browse/HBASE-28124) | Missing fields in Scan.toJSON |  Major | . |
 | [HBASE-28416](https://issues.apache.org/jira/browse/HBASE-28416) | Remove hbase-examples from hbase-assembly |  Major | . |
+| [HBASE-28453](https://issues.apache.org/jira/browse/HBASE-28453) | Support a middle ground between the Average and Fixed interval rate limiters |  Major | . |
 
 
 ### BUG FIXES:
@@ -428,6 +429,9 @@
 | [HBASE-28338](https://issues.apache.org/jira/browse/HBASE-28338) | Bounded leak of FSDataInputStream buffers from checksum switching |  Major | . |
 | [HBASE-28415](https://issues.apache.org/jira/browse/HBASE-28415) | Remove Curator dependency from hbase-endpoint |  Major | . |
 | [HBASE-28314](https://issues.apache.org/jira/browse/HBASE-28314) | Enable maven-source-plugin for all modules |  Major | build |
+| [HBASE-28449](https://issues.apache.org/jira/browse/HBASE-28449) | Fix BackupSystemTable Scans |  Major | . |
+| [HBASE-28456](https://issues.apache.org/jira/browse/HBASE-28456) | HBase Restore restores old data if data for the same timestamp is in different hfiles |  Blocker | backup&restore |
+| [HBASE-28412](https://issues.apache.org/jira/browse/HBASE-28412) | Restoring incremental backups to mapped table requires existence of original table |  Major | backup&restore |
 
 
 ### TESTS:
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 096e9f2..a69bc69 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -766,6 +766,13 @@
 We will still publish it into maven central.
 
 
+---
+
+* [HBASE-28453](https://issues.apache.org/jira/browse/HBASE-28453) | *Major* | **Support a middle ground between the Average and Fixed interval rate limiters**
+
+FixedIntervalRateLimiter now supports a custom refill interval via hbase.quota.rate.limiter.refill.interval.ms. Users of quotas may wish to change hbase.quota.rate.limiter to FixedIntervalRateLimiter and customize this new setting. It will likely lead to healthier backoffs for clients and more full quota utilization.
+
+
 
 # HBASE  2.2.0 Release Notes
 
diff --git a/pom.xml b/pom.xml
index 2840fe8..92e949b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -523,7 +523,7 @@
     </site>
   </distributionManagement>
   <properties>
-    <revision>2.6.1-SNAPSHOT</revision>
+    <revision>2.6.0</revision>
     <!-- override on command line to have generated LICENSE files include
          diagnostic info for verifying notice requirements -->
     <license.debug.print.included>false</license.debug.print.included>