Thief 4 - Switched to next-gen consoles?

Every major site is running the rumour that Thief 4 has been switched to next-gen consoles, hence the delay. This would mean a release late next year. From CVG:

That's according to the latest issue of OXM UK, which reports in its gossip section that the long-in-development revamp will likely release late next year, when Xbox 720 (codename 'Durango') is expected to launch.

CVG sources indicate the report is accurate.