HTC missed its 90-day goal to deliver Android 5.0 upgrades to all owners of the One M8 and One M7. They're very sorry about that. But to give credit where it's due, it does seem like the company is genuinely trying to get its hardware updated as soon as possible. Sprint's One M8 and M7 have both been given the update, European M8 owners got it in late January, and owners of the unlocked, developer edition, and Google Play Edition of both phones should all have the update by now.
HTC Says T-Mobile's One M8 Will Get Its Lollipop OTA Starting On Monday, February 9th was written by the awesome team at Android Police.