Tokina announced plans for a new 16-28mm f/2.8 wide angle lens for full frame (source).
In 2010 Ricoh is planning to release a new P10 28-300mm f/3.5-5.6 VC lens piece for the GXR system. This lens was reported as a rumor here over a month ago. The included sensor will be back-illuminated CMOS with 10MP (same as in the Ricoh CX3 camera). The other lens will be A12 28mm f/2.5 lens with manual focus, bundled with a 12MP APS-C sized CMOS sensor. One additional accessory will also be released (source).