Back when the HTC First Facebook phone was announced I asked if the backing from Facebook was what HTC needed to succeed with the One and First. According to Engadget's sources it looks like First may just go the way of the Microsoft Kin as the UK launch is delayed and may never happen.
A couple weeks ago AT&T offer a 99 cent promotion just a month after release. Some unconfirmed reports state that the HTC First is on the way out at AT&T and this 99 cent promotion is just a way to get rid of some inventory before the device is pulled from their offerings.
Engadget confirmed with EE in the UK that it was Facebook's decision to delay the release of the HTC First as they continue to work on a better Facebook Home experience. With a long delay, there doesn't seem to be much of a compelling reason to sell a phone as the market continues to move forward.
I haven't used the HTC First myself, but from what I hear it is a solid mid-range device that can easily be switched to a stock Android experience. A delay like this, if true, is definitely not a good thing for HTC. There was another unconfirmed report that HTC may have sold 5 million HTC One devices so there might be one bright spot for the struggling company.