Hideaki Anno seems to have a role in an upcoming Japanese movie called Last Letter. It apparently starts a roadshow release in Japan very soon starting Friday January 17th. It's a drama written & directed by Shunji Iwai about a failed romance that never came to be spread across several decades seemingly starting in 1992. This is a nice & surprising reunion of Shiki-Jitsu's actor & director only the roles have reversed. It doesn't appear to be that Anno has a lead role and he might only be in a few scenes or even just one but he's prominent enough in it to get a credit in the trailer & appear on the poster. A nice little side project he must have done at some point in 2019 during production on 3.0 + 1.0. The man is nothing if not busy lately.
I know little about Iwai myself and haven't done enough digging to confirm this but curiously enough I think this movie might be a remake of Shunji Iwai's last movie which was his 2018 Chinese debut called.... Last Letter.
Trailer (Anno appears for one shot exactly at the 1 minute mark):
https://www.youtube.com/watch?v=EvkzNshmjCA
