Ze strony na FB:
"This update focuses mostly on Silo for Linux (our most-requested update), plus small bug fixes and internal optimizations that should benefit all users. We've also added .stl import and an updated windowing system. Much of this update is internal code optimization to pave the way for future updates. (So even though we've added support for a whole new operating system, we've kept the version increase small--just 2.2 to 2.3.)"