It's confirmed. The game does NOT end after the main quest! : Fallout Series Discussion

» Fri Aug 07, 2015 11:02 pm

Here it is https://twitter.com/BethesdaStudios/status/629340621459877888

No level cap either!
Rejoice!

» Fri Aug 07, 2015 8:36 pm

Yay!!!!

Presumably, this means they've balanced it like Skyrim, where you're unlikely to hit the gamebreaking plateu before you run out of vanilla+DLC content.

» Fri Aug 07, 2015 1:09 pm

There's already a thread in the correct forum :wink:
http://www.gamesas.com/topic/1530094-no-end-and-no-level-cap-confirmed/