Yes and no. The same sort of script extender is being used for FO4. Engine wise Skyrim SE is a Fallout 4 port for the new consoles. Incidentally they recreated skyrim in the FO4 engine before making FO4 itself. Hense SSE now. I hate hitting that dreaded 3.1 gig cap for mods in my skyrim game now. Can't wait for this new update.