Looks like Samsung is now mass producing larger SSD drives. If so, I would bet they could be in the Air by MacWorld in January...
http://news.cnet.com/8301-13924_3-10103645-64.html?tag=newsEditorsPicksArea.0
http://news.cnet.com/8301-13924_3-10103645-64.html?tag=newsEditorsPicksArea.0