Apparently, the show isn't that popular here yet. But if rumors are to be believed (from ABSCBN and GMA forums), the show is going to be licensed here in the Philippines.
The release timeline for the US was already revealed in AnimeCon 2008.
July- subtitled only DVD release (in several flavors)
July 28- English dub to start airing every 11 PM, and twice a week, on Sci-Fi channel.
4Q 2008- English-dub DVD release
Unconfirmed: Blu-ray version on the works (yummy!!)
About the film: there are 2 movies in production, the first one: Gekijō-ban Tengen Toppa Gurren-Lagann: Guren-hen (Tengen Toppa Gurren Lagann the Movie: Crimson Chapter) will open in Japan on September 6. The other movie, while confirmed, has no official release details yet. It will be a reimagining of the series, so while I think it's pointless, (you can't compare 15 episodes of the series to a mutilated 2 hour version), I'm still excited.
Also, you can check out the movie's website:
http://www.gurren-lagann-movie.net for a promotional video.