Review from Android Central:
HTC One review | Android Central
Credit to them for a well written, balanced, in-depth review. Once again wholly positive with only a few niggles but nothing major. HTC's best phone yet. As for battery life, lasted at least a day. Suits me fine!
There's also this from PocketNow:
Not really a review as it isn't up yet, but more listing the pro's for why you should want the HTC One. Do you agree with the author?