Security: The performance of the secured path permissions check has been improved by 80% for big trees ( > 700K items).
Linux (GTK) GUI and Mac OS GUI: Now, you can merge a selection of files in the Merge view, instead of having to process all merges at once.
Jenkins CI plugin: Updated to version 2.5. The workspace issue in cross-platform setups (workspaces were being always removed before build, regardless of the "Use update" option value) has been fixed.
Bamboo plugin: Added compatibility with Bamboo 5.10. Warning! The Bamboo Plastic SCM plugin is now incompatible with Bamboo versions 3.x and older.
Sync View: Very rarely the Sync View failed with a "Binary Stream '0'" error. If you were unlucky enough to see one of these, don't worry, you are safe now. It was a very rare bug, hard to reproduce, that almost nobody suffered. It has been fixed thanks to Unai Landa from Digital Legends ;-).
The wild and crazy bug has been around for about 7 years and it was a problem in the network layer. The server zips every response sent back to the client. When the compression didn't succeed (very rare) the client was eating some header bytes incorrectly, expecting compression to happen. Then the error showed up. Fortunately, it has been caught and jailed.