The first look at the new series will occur Sunday night during the season finale of Once Upon a Time (which was successful enough this year to spawn a spin-off, Once Upon a Time in Wonderland, during this round of ABC series orders) at 8:00 ET/PT Sunday, May 12.
This is the second announcement in two days of Disney using Marvel properties in its other divisions (ABC is owned by Disney); Big Hero 6 will be the first Disney Animation film featuring Marvel characters (see "'Big Hero 6' Gets Date").
Jed Whedon and Maurissa Tancharoen wrote the pilot. Jeph Loeb and Jeffrey Bell are exec producers along with Joss Whedon and the pilot co-writers).