Talk about some amazing (and thankful) news! Here's the scoop from Ausiello at TVGuide:

ABC is said to be finalizing a post-strike spring schedule that not only hands Lost its best available time slot, but promises to further strengthen the network's stronghold on Thursday night. According to multiple sources, ABC plans on airing this season's final five Lost episodes on Thursdays at 10 pm/ET beginning in late April, where it will follow all-new episodes of Grey's freakin' Anatomy! Throw in fresh installments of Ugly Betty at 8 pm and you've got yourself the most formidable one-two-three punch since the early days of CBS' Survivor/CSI/Without a Trace smashup. Creatively speaking, I'd go so far as to say this rivals NBC's storied Must-See-TV juggernaut back in the '90s. And the best part is that I'm hearing that ABC is strongly considering keeping this dream lineup intact this fall... and beyond.