Very exciting news for fans. Still some lingering questions. NBC is one of the producing partners which concerns me a little. Not sure I like the idea of the series being on network television.
The basic film/tv breakdown (if I'm reading this right) seems to be something like:
Film 1 - The Gunslinger
Season 1 - The Drawing of the Three
Film 2 - Wastelands
Season 2 - Wizard and Glass
Film 3 - Wolves of the Calla/Song of Susannah/Dark Tower