Obviously we talk pretty funny over here :)
Last weekend I added a modecode-bit which forces a dual-screen mode, and a demo video of a dual-screen AES-desktop will be published shortly. It's really awesome to see this on an Atari for the first time. The cool part of it is that it really doesn't require any fancy/special handling in the VDI, since it's based on two aligned virtual screens.
Next thing to do is to accellerate filled rectangles. They're accellerated in the VDI already, but so far I have only accellerated opaque-blits in the NVDI driver. This makes a big difference when the GEM screen takes 10+ megabytes (compare that to the 32k on the ST)!
Note: Sorry for not attempting to write in polish again, but google translate makes everything look really silly anyway, ha?
EDIT: 5th demo video is here: http://www.youtube.com/watch?v=1WwD8hSVF_E
-- PeP