A movie based on the anime series sequel to Magical Girl Lyrical Nanoha, Magical Girl Lyrical Nanoha A's, will be released next summer in Japan:
"Magical girls once more."
The plot focuses once again on Nanoha and Fate, who remained friends between worlds after they tried together to stop clone girl Fate's "mother" from completing a Jewel Seed powered jump to an alternate world, Al Hazard. A's story revolves around a powerful magic book.
The TV series of A's ran during the fall seasons in 2005. The original TV show got a movie version last year. There is still another TV series after this one, StrikerS, plus a couple manga, so there's the possibility this won't be the last film version.