Can anyone knowledgable in lore give a full picture, here? Have Morrowind and Elsweyr really seceded? What state do they and all the other provinces find themselves in? (Speaking of Morrowind I even heard NPC pvssyr in Oblivion that Skyrim had invaded, how'd that turn out?) How has it's decline affected the Empire itself and Cyrodiil? Mention of the Mages guild splitting makes me ask of the condition of all the other organizations. What of the Fighters guild? The Thieves guild and the Dark Brotherhood? What was this giant floating city? Any word from Akavir?
So my question essentially is, lore-people, what events have taken place and how has the world of Tamriel changed since Oblivion? What kind of historical, cultural and societal context and situation will we find ourselves in in Skyrim as a result of that change?