Publisher Square Enix announced Thief in March as a Windows PC, PlayStation 4 and Xbox One title. Eidos Montreal said today that it is developing the current-generation versions in-house, along with the previously announced versions.
"It was really, really important for us — before coming to announce it — to make sure that the core mechanic, the fun factor, we will not touch that," said senior producer Stephane Roy in an interview with Eidos Montreal community manager Adam Badke. According to Roy, while the gameplay will be the same across all platforms, the studio is allocating development resources differently for the PS3 and Xbox 360 versions than for the next-gen versions.
For more on Thief, check out our own interview with Roy from E3.