Thanks to Inertia's awesome work, the generic Version12, Version13, etc enums have been replaced by specific ones. This change makes core functionality like Shaders, Vertex Buffer Objects, Point Sprites and Multitexturing both easier and safer to use: code-completing editors will be able to suggest a compact list of available tokens (in contrast with the large VersionXY lists), while improved type-safety means you are protected from passing invalid tokens to OpenGL functions.
On another note, JTalton has done a great job in coding a double-precision version of the math toolkit and george has investigated the reported errata in the Matrix functions and produced the necessary fixes (actually only one function, Perspective, had a problem). The next release, 0.3.14, is progressing smoothly and should become available at some point during this weekend (release status available in the Roadmap).
Don't forget to say hello at the IRC channel! (de.quakenet.org:6669, #opentk)