The HTC Thunderbolt has another firmer launch date now, through this latest rumor. Not one, but two insiders are saying that the phone will ship on March 21. BGR says that the tips came from fairly new sources, but also that HTC’s Facebook page briefly mentioned the same date. So it seems more reliable.
The phone was originally thought to have a mid-February release, with dates being repeatedly pushed back. This may be due to poor battery life that needed some firmware fixes, but we don’t even have official word on that.