These are the updates for several 4e epic threats that I had posted on the old WotC forum. I also included the epic minions that some of these gods could summon / create, and I included the damage by level charts (at the end of the PDF) I used to create these epic monsters.
Please note that I made the demon lords first and then changed the methodology slightly and not all of them where updated.
Anyway - enjoy!
EDIT: I have added the .monster files for anyone who wants them. I don't know if these work with the off-line monster builder or not.