Judging from the pictures of the HTC Proto, it looks like the handset's corners are a little more rounded, giving the phone a bit of a softer look, and the T-Mobile G1-esque chin has been surgically removed. The soft touch coating on the back has been liberally applied, but overall most will find the HTC Proto to be a step up from the HTC One V in looks as well as in specs. In fact, the HTC Proto resembles the higher end HTC One models like the HTC One X and HTC One S.
There is some speculation that we will see the HTC Proto introduced at IFA in Berlin. If so, we should learn all of that mundane information like pricing, launch date and carrier availability.
source: TheVerge via AndroidCentral