Launched back in 2018 this trailer was postwd 7 years after the initial release of Skyrim. 2 years after Skyrim Special Edition and 3 years before the Sky Anniversary Edition.
Legend say Bethesda will release a 4k Edition if the Starfield dlc fails to live up to expectations.
I think they kinda made that announcement to tell people they haven't forgotten about the franchise, because there were fans upset that they were hearing nothing about it at all. But since they made it, it's now annoying that it's been so long. One of those damned if you do, damned if you don't things. I would have preferred TES 6 instead of two Fallouts in a row (4 and 76), but at least it's now their next project.