Things have changed at Three UK, as it was only a few months ago that we ran the story of the carrier making the decision as to whether or not the company should continue to stock Windows Phones. The carrier was on the wagon back in 2010 with the Samsung Omnia 7, but has now been effectively pushing the Nokia Lumia 800 since its release. Should you be waiting for the Lumia 710 and be on Three, then you'll be happy to learn that the carrier is bringing Lumia 710 back.
Be sure to head on over and register your interest for updates.
Source: ThreeUK, thanks TheWeeBear for the tip!