Watch HTC's Uh-Oh event live stream here
The offer seems to apply to US customers only and seems to be inspired by Google's broken Nexus replacement program (which is still a bit hazy, as details on it are scarce). Well, the more manufacturers offer such a great deal – the better, we say.
As to whether the event will be used to announce something else – we can't be sure. We do know that here will be a live Q&A session with President of HTC Americas Jason Mackenzie, and you can Tweet your questions to @HTCUSA. We could speculate that HTC may announce an early One M9 launch for at least one of the US carriers, as T-Mobile will be holding an Un-carrier event at 10 AM (PDT) / 1 PM (EDT) – just an hour after HTC's Uh-Oh one starts – and we are not ready to write this off as a 100% coincidence. But this is just guesswork.