Samsung has announced they have completed a working prototype of PRAM (Phase-change Random Access Memory) which is faster and cheaper to manufacture than current NOR Flash memory. They expect that this will replace flash devices over the next decade... we'll see I guess.
http://www.eetimes.com/news/semi/showArticle.jhtml?articleID=192700709
http://www.eetimes.com/news/semi/showArticle.jhtml?articleID=192700709