Tezawaly of NanaPho over in Japan managed to get his hands on the Fujitsu IS12T, which is expected to ship within 3 days. He did the smart thing and ran WP BenchMark on it to see if there was anything different. While we don't know all of the specs of the IS12T, there's little doubt that it has to have the Adreno 205 GPU chipset on board due to the outstanding performance, in addition it has the later-gen Qualcomm MSM8655 at 1GHz. You can see Tezawaly's results compared to other "normal" Windows Phone in WP Benchmark's stats below:
Needless to say, the results are impressive. Next up you can see it compared to the more popular Samsung Focus. Once again, the GPU average at 40 on the IS12T versus just 19 on the Samsung Focus. Looks like that new Mango hardware will be harder and hader to resist, no?
Source: NanaPho; Related: See the HTC Mazaa benchmark results for comparison