has there been any news on this fellow in skyrim or the two dlcs?
i thought beth introduced him in shiv isles to bring some new lore and a new prince into the tes universe to work with, but beth seems to not care for him much
his in game description seems to imply that he should be at least known by skyrims time
hes had a good 2 centuries to make a comeback, and hes the master of thorough takeover of oblivion planes
is there any little bits in new books or something? i havent found squat
maybe in a future dlc? (not centered on him, but maybe a book or something to give his lore some catch-up)

also im not sure if he turned back into the sheo we see in skyrim
ive heard many say that is the champ of cyr after ruling the isles for so long
which would suggest jyggalag is still free and himself (if the above is true)

Oblivions PC is indeed Sheogorath. No mention of Jygg so far.