It'll take a good load of optimizations until the minimun specs get into an acceptable range, maybe N64 emu level.
I'm really looking foward Satourne and GiriGiri since screenshots shows that both hacked into the Saturn's infamous mesh transparencies, using 50% alpha transparencies instead. Also, seems they fix the half-transparency as well (sprite-to-sprite 50% transparency, but that never shows the BG behind it), as seen in Panzer Dragoon.
Some games will benefit a lot from this.
Err... lemme remember you guys one thing: the 60fps emulation doesn not means that a game that previously ran at, say, 15 fps, like Burning Rangers, will run at super-smooth-sexy 60fps on the emulator. The game will display at 15fps, because the Saturn (assuming a NTSC saturn) takes 4 frames to draw one BR frame, same for all other games. Just check PSX/N64 emulators, where most games actually don't run at 60fps, bout you need 60 fps for matching the original speed.
The only games that will get to true 60fps are the ones that originally run at 60fps (all pure 2D games, and a few polygon games, like Radiant Silvergun, Thunder Force V, Virtua Fighter 2, Dead or Alive...).