[Website] Add ADBC 12 release post (#523)

Author: lidavidm

_posts/2024-05-21-adbc-12-release.md

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+---
+layout: post
+title: "Apache Arrow ADBC 12 (Libraries) Release"
+date: "2024-05-21 00:00:00"
+author: pmc
+categories: [release]
+---
+<!--
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+-->
+
+The Apache Arrow team is pleased to announce the 12th release of
+the Apache Arrow ADBC libraries. This covers includes [**56
+resolved issues**][1] from [**13 distinct contributors**][2].
+
+This is a release of the **libraries**, which are at version 12.
+The **API specification** is versioned separately and is at
+version 1.1.0.
+
+The subcomponents are versioned independently:
+
+- C/C++/GLib/Go/Python/Ruby: 1.0.0
+- C#: 0.12.0
+- Java: 0.12.0
+- R: 0.12.0
+- Rust: 0.12.0
+
+The release notes below are not exhaustive and only expose selected
+highlights of the release. Many other bugfixes and improvements have
+been made: we refer you to the [complete changelog][3].
+
+## Release Highlights
+
+There is a [known issue](https://github.com/apache/arrow-adbc/issues/1841)
+with multiple drivers in a single process due to using languages with runtimes
+as the basis for many drivers.
+
+Option strings in C# are now case-sensitive.  In general, the C# bindings are
+rapidly progressing.  A driver that wraps the Hive Thrift API was added.
+
+The Flight SQL driver now supports the new "stateless" prepared statement
+proposal.
+
+Rust libraries were not released to Cargo, but the implementation has made
+rapid progress.
+
+The Snowflake driver now supports bind parameters.  Also, some queries which
+only return JSON data (e.g. `SHOW TABLES`) are now supported.  Quoting of
+names in bulk ingestion was fixed to conform to Snowflake SQL syntax.
+
+## Contributors
+
+```
+$ git shortlog --perl-regexp --author='^((?!dependabot\[bot\]).*)$' -sn apache-arrow-adbc-0.11.0..apache-arrow-adbc-12
+    25	David Li
+    19	Curt Hagenlocher
+     5	Matt Topol
+     5	Sutou Kouhei
+     4	Dewey Dunnington
+     3	Alexandre Crayssac
+     3	Matthijs Brobbel
+     2	Bruce Irschick
+     2	Cocoa
+     2	davidhcoe
+     1	Bryce Mecum
+     1	Hyunseok Seo
+     1	Joel Lubinitsky
+```
+
+## Roadmap
+
+A Google BigQuery driver is being developed in Go.  We anticipate C# will
+reach stability soon and Rust should start seeing releases as well.
+
+## Getting Involved
+
+We welcome questions and contributions from all interested.  Issues
+can be filed on [GitHub][4], and questions can be directed to GitHub
+or the [Arrow mailing lists][5].
+
+[1]: https://github.com/apache/arrow-adbc/milestone/16
+[2]: #contributors
+[3]: https://github.com/apache/arrow-adbc/blob/apache-arrow-adbc-12/CHANGELOG.md
+[4]: https://github.com/apache/arrow-adbc/issues
+[5]: {% link community.md %}