Yes! I covered the GTA port here on Hive, I believe, and it is apparently only getting better as they work on things. Crazy to think what was ultimately the cause of the Sega Dreamcast failing is what is keeping it alive now.
There are so many Dreamcast ports and new games coming that it is simply amazing.
RE: Mario Kart 64 Receives Dreamcast Port, Not Using Emulation, Bringing Special Guest