Summer Wars (2009) 4K UHD Steelbook and Blu-ray is first in a new Mamoru Hosoda early films 4K UHD initiative by @GKIDSfilms and @Shout_Studios. 

4K UHD Steelbook:Blu-ray:#ad 

4/1 release date.

Bonus features: 

Interviews with the Original Cast - Ryunosuke Kamiki (Kenji Koiso)

Interviews with the Original Cast - Nanami Sakuraba (Natsuki Shinohara)

Interviews with the Original Cast - Mitsuki Tanimura (Kazuma Ikezawa)

Interviews with the Original Cast - Ayumu Saito (Wabisuke Jinnouchi)

Interviews with the Original Cast - Sumiko Fuji (Sakae Jinnouchi)

Interview with Mamoru Hosoda

Teasers & Trailers
#ad