The 8mbit software kit and a new copy of Atari800Win have been uploaded.
The 8mbit kit contains support for exe multicarts upto 8mbits. The code for multiple-disks has no been merged yet due to some bugs but should be out soon.
The emulator contains support for testing 1, 4 and 8mbit cartridges, with a bug fix for 8mbit emulation. The binary and source code are available on the main documentation page at:
http://www.atarimax.com/flashcart/documentation/
Steve