For folks who have been yearning for the HTC One on Verizon, and building up false hope because of the rampant rumor-mill, you should probably stop torturing yourselves. Sadly, HTC indirectly confirmed for the second time, that the HTC flagship will not be coming to Big Red. HTC’s Senior Global Online Communications Manager, Jeff Gordon (one of the execs who recently left the company) said,
“it’s always a great thing to have our phones on as many operators as possible, but we’ve got nothing to announce in terms of Verizon.”
This quote was his response to the direct question of why Verizon doesn't have the HTC One. Reading between the lines it's obvious that Verizon didn't want it, again probably because they already have a similar device with the HTC Droid DNA. There is another small rumor floating around that the reason the HTC One didn't come to Verizon was because Verizon wanted their own special branded/named version of the device but HTC wasn't willing to comply with this.
There was one other bit of news from HTC. They also explained why there is no MicroSD card slot on the the US and UK versions of the HTC One, yet the Chinese and Japanese versions do. Apparently space was the issue. The Chinese and Japanese cellular radios take up less space, so they were able to squeeze a MicroSD slot in for those devices. The larger radios in the US and UK versions wouldn't facilitate that.
Source: TalkAndroid