I've called HTC a few times in the past week and each time they read back to me the "official" statement dated 6/21 which is that HTC intentionally put the cap in place for "overall performance increases", such as battery life. I've never heard about the HDMI drivers excuse from anyone other than other forum posters.
Also, the last time I called (last Friday I believe) they had a new memo dated 6/23 which stated that HTC is "looking into the 30fps cap". I asked the rep what that meant, and he had no additional information. My assumption is that it means they've gotten enough flak from customers to at least take a look at removing it. Whether they will actually do that or not is another matter.
I was gonna say the same thing, I've never read or heard anything fr HTC about the 30 fps been an issue about the HDMI driver, I saw a forum member posted that not official fr HTC so I really believe it will b taking care of on our next update