As Tim announced at DevBlog, the NDK 2.0 beta 3 is now available. This beta includes new tooling, API, samples, and documentation as well as the Scoreloop™ SDK beta3. Tim’s post has a list of the changes; also see the Release Notes.
The NDK samples have been updated, and two templates used in the IDE are now also available directly: ScreenTemplate (Hello World using Native Graphics) and OpenGLES11Template (OpenGL Window 3D Graphics). There is also a new sample that shows how to use Neutrino Channels (*) so two different threads can communicate sending events (see ZIP file).
Added – Turns out they are not exactly Neutrino Channels; I will post more information when I get it.
Added – the BPS channel functions are here.