No need, since it’s obvious they’re done with Key and are busy anyways. They have 3 anime series coming out next year, along with 3 new confirmed movies, not to mention they still have other Light Novel stories they could do. Plus, if there were ever a chance they’d work for Key again, they’d most likely do Tomoyo After rather than a new title.
I doubt it’s an anime series at all. It just wouldn’t make sense, since they’re already planning the Kud Wafter anime, supervising the project, and the other
studios they’ve worked with aren’t even suitable.
I’m pretty sure by “anime”, he might just mean that we’ll get animated scenes in the visual novel, whether that’d be something similar to Rewrite’s Moon OP, or cut-scenes, or even outside of the visual novel to build up to the hype.
Though since he mentioned smartphone, I’m guessing Summer Pockets is going to have something similar to Ignis Memoria/Dungeons & Takafumi’s.
Oh, but that girl who looked like Yusa definitely looks better colored. Her cape doesn’t look as awkward anymore either.