Openmoko is still developing new phones. Each phone has an internal name before it's reaches it's final status. Here you can follow the development for nearby.
The fourth Openmoko planned, GTA04, will be based on a different system-on-a-chip.
The next phone, GTA03, will be based on the same system-on-a-chip as the Neo FreeRunner (GTA02). It will presumably differ from it by having a 3.5 mm TRS audio connector (instead of a 2.5 mm connector), EDGE and a camera. GTA03 will not include support for 3G networks.
GTA02 (Neo FreeRunner)
- Main article: GTA02 revisions
GTA01 (Neo 1973)
- Main article: GTA01 revisions