HTC One in black coming soon according to AT&T and Sprint websites38
Meanwhile, on Sprint's website, those checking out the HTC One were greeted by a box listing some information on the device. Near the top, in bold caps, it says that the Black HTC One is coming soon. Since the version in Stealth Black for the nation's third largest carrier will have to be 32GB, the device will most likely cost the same $199.99 on contract that the silver model is priced at.
Meanwhile over at T-Mobile, the HTC One doesn't launch until this Wednesday, April 24th and the website thus far mentions only the silver version of the phone. Verizon will apparently not be offering the HTC One to its customers.
source: AT&T, Sprint via AndroidCentral