Bethesda Game Studios has stated that they are making the engine a lot better for their next game, which is likely TESV. For Fallout 4, expect a really different engine(hopefully).
They've been so hush-hush over at Bethesda about their newest project (I'm assuming its TESV) its probably got that new engine running like a charm for it, I bet thats why they don't want to show anything yet. :tops:
Just seeing Fallout New Vegas I can't wait to see what the Fallout series will do next.
