On the news page.
Keep in mind that the changes made to the driver set did not hurt performance. If you recalll back to the TNT days, a new driver set was released that really hurt the TNT's performance. This lead to a lot of driver mixing to get the right balance of speed and stability. No such concern nowadays...
In the weeks before the new product launches, there are several driver revs designed to get the new products working with out taking down the legacy chips. Expect more lateral gains.
Brian - aka HalcYoN
Nikon D700 and D300s | SB-600 | Tamron 28-75/2.8 | Tamron 17-50/2.8 | Nikon 70-200VR I
10.5/2.8 Fisheye | 28/1.8 AF-S | 35/1.8 AF-S | 50/1.8 | 105/F2 AF-D | Sigma 150/2.8 Macro
Nikon J1 | 10-30VR |30-100VR | 10/2.8 | 18/1.8