They've been referring to future consoles on their site for a while, but this is the first time they're doing it 100% unambiguously, so it's possible we'll see their next game (presumably Fallout 4) on next-gen instead.
Originally Posted by Bethesda
Future Generation Console Programmer
Division: Bethesda Game Studios | Department: Programming | Location: Rockville, US-MD, US
Bethesda Game Studios is looking for experienced programmers to work on cutting-edge technology for an unannounced game on future-generation consoles.
-At least 5 years of game development experience with multiple titles shipped
-Extensive experience programming and optimizing for the Xbox 360 and PS3
-Experience with DirectX 11 a plus
-Passion for making GREAT games, and being part of a GREAT team
-Ability to contribute innovative ideas towards all aspects of game development
-Must create amazing things with minimal oversight
-Experience playing Bethesda Game Studios games a plus