Nestopia v1.29
Nestopia has received an upgrade to version 1.29. Read more for changelog, official website is http://nestopia.sourceforge.net.

FB Alpha Plus! v0.2.95.23
The Final Burn spinoff emulator has been upgraded. Grab it here.

bsnes v0.016l
bsnes has been updated with several substantial new features including special chip support and game genie support. Read more for details; grab it here .

Dolphin v1.03.2 beta
The GCN emulator Dolphin has been updated for the second time this month. Link here for the forums with the download link. The official Dolphin page can be found here .

saturn SSF .007
Grab it here . Looks like there are some improvements in the emulation.

GENS32 v1.66
GENS32 has been updated with substantial improvements and new features. Read more for details, download and info here .