April 27 2011
WordPress 3.1.2 is now available, it addresses a vulnerability that allowed Contributor-level users to improperly publish posts.
3.1.2 details at WordPress.org
April 26 2011
The latest ThinkUp release provides security and design related bugfixes.
Official changelog for v0.11
April 6 2011
WordPress 3.1.1 is now available, it’s a maintenance and security release that fixes almost thirty issues in 3.1.
3.1.1 details at WordPress.org