According to Amazon Japan, short OVAs of Accel World
was announced to be bundled with the Blu-ray & DVD. The anime is based on a parody four-panel manga ">>>Accel World (Akucheru World.)". The production studio is J.C. Staff, not Sunrise.
Cover art of Accel World four-panel manga
The first episode will be released on July 25th.
Staff of the OVA:
Director & Character Design: Yamakawa Yoshiki
Script: Sugihara Kenji ("Shiki
Production Studio: J.C. Staff
Source: Amazon Japan
Accel World Specials