Following Summer Wars to 4K UHD Steelbook & Blu-ray is Mamoru Hosoda's Wolf Children on 8/5. Amazon pre-orders: 

4K UHD Steelbook:Blu-ray:#ad 

More details and Mamoru Hosoda 4K UHD Steelbook announcements coming later.

Possibilities include The Girl Who Leapt Through Time, The Boy and the Beast, Mirai, and Belle.
#ad