Lifetime has picked up 9 more episodes of Blood Ties. From the wording of the article, it's not clear if this is 9 additional episodes, or the back nine from the initial deal. In any case, the show will continue past the first run of 12 episodes.
Lost has been picked up by ABC for three more seasons--with a catch. The seasons will be 16 episodes each, for a total of 48--the equivalent of roughly 2 seasons at the traditional US 22-25 episodes per year. I've said before that I think this is a good idea--it gives the writers a goal to shoot for to tie up the increasingly convoluted storylines, rather than motivation to continue to string them out until the ratings fade.
Still waiting for news on Supernatural and Jericho, but rumor has both of them in good positions for renewal. I'll keep my fingers crossed.