For those who are unfamiliar with this trend, lots of anime producers these days have been editing the first several episodes of any given show into a film format and then selling tickets to them in advance of the show's broadcast debut. The cynical side of me calls this double-dipping, but it's a fun, fan-focused way of building up hype for something. I might go see this.
For people unware, this is the new Gundam show being done by Studio Khara -- Hideaki Anno's studio who made the Evangelion Rebuild films and is heir to the Gainax legacy. I didn't realize until now that Youji Enokido was doing Series Composition (basically head writer). You might recognize that name as one of the main writers for Sailor Moon, FLCL, RahXephon, and did Series Composition for Utena, Ouran Host Club, Redline, Star Driver, and Bungo Stray Dogs. That's a good get!