User blog comment:Timeoin/Elder Scrolls Online: Lore Revealed/@comment-5782057-20130925221215/@comment-7153552-20130925233428

They did say there were portions that would be available post-launch. I would imagine that we'll see, at the very least, most of the Mainland Morrowind and portions of Vvardenfell. I feel like if they don't include Red Mountain they would be entirely remiss.