Full release notes:
http://www.arcengames.com/mediawiki/index.php?title=Tidalis_-_0.903_Beta_ReleaseThis new version includes the new Living Stone special block, and two new game styles: Shuffle and Block Swap. All three of these are riffs off of a new "block swapping" mechanic that we've added in. We hadn't planned on doing more special blocks or game styles before the official release, but I saw Ixiohm's suggestion for the living stones today and thought that sounded like a great way to spice up the end of the adventure with some new-at-the-very-end blocks. And from that mechanic, the idea for the two game styles was born.
There are also numerous improvements to the networking once again, as well as many refinements to the matchmaking service. These two items are pretty much 90% complete now -- still a few rough edges, mostly around stuff like adventure mode in the networking side of things (the adventure map and cutscenes are not yet synced over the network, but will be). So have at it if you enjoy network play for things like this, and let us know if you find any issues!