From the coder himself:

For the Apple iPhone and iPod Touch I am:

Working on adding sound to snes4iphone.
Finishing up temper4iphone for a release. (Thanks for the support everyone!)
Considering continuing iPhoneDoom.
Hoping to work out details on porting Hedgewars, a Worms-like game.
For the upcoming next-gen homebrew gaming handheld, Pandora I am:

Working on improving psx4all further and trying to get OpenGL ES 2.0 implemented to use Tinnus' work on the OpenGL ES GPU.
Posting videos of psx4pandora as things progress.
Taking a look at N64 emulation on the Pandora. More news as it develops.