A short release, less than a month after 1.1.
There have been many changes to Avatica, hugely improving its coverage of the JDBC API and overall robustness. A new provider, JdbcMeta, allows you to remote an existing JDBC driver.
[CALCITE-606] improves how the planner propagates traits such as collation and distribution among relational expressions.
[CALCITE-613] and [CALCITE-307] improve implicit and explicit conversions in SQL.