User blog comment:Draevan13/Imperial City DLC ideas./@comment-1992639-20130214200459

The landmarkers weren't silent hints. They were just for icing on the cake, so that the fans would say "If we can look past that mountain we should see what is Cyrodil, with the-... is that the White-Gold Tower?!" As for seeing Solstheim, as far as I know you could see the Red Mountain. There are big floating platforms of ice up north, but those aren't Solstheim afaik. Maybe they added Solstheim in the distance with 1.8 though, I don't know as I didn't check since, it sure would make people buy the DLC as they'd want to go there.

I don't know about the Imperial City being a DLC. It is possible, but I'd more expect it be an area where some event takes place. It'd be a real nice closure for Skyrim if Mehrunes Dagon had made a pact with Alduin, having whisked him away from Soverngarde upon his defeat. It'd then be up to the Dragonborn to light up the dragon fires again, in some way restoring the Amulet of Kings from the now statue-fied Martin/Akatosh, so that Alduin can truly be defeated on top of the White-Gold Tower in an epic all-out duel. The story then fades out with that the last Dragonborn would be the first emperor of a new dynasty that lasted for the entirety of the 4th era, but not before he or she had many more adventures (as the game continues, much as it did after the main quest).