Probably enough - or more than enough - to satisfy the curiosity of those who started with Zero until the movie(s)? Not sure. From what I understand, there's a possibility of it being more than one movie, like they did with KnK - possibility being the key word.
Personally, I look forward to HF movie because it means Shirou + Rider team up against Saber Alter. :3c
(Well, more Bellerophon + Rho Aias vs Alter Excaliblast, but either way.)