DIrishB
The Timeline Guy
Pretty sure there was a to be continued at the end of that Marvel Zombies Hostess parody and that didn't make it anymore canon.
I don't even remember. But, considering the fact AoS is arguably much higher profile than MZ and the avenue with which the comic was released (online versus as printed in Wizard Magazine) is also more readily available indicates there's a possibility we'll see more of these. Least I hope so.
I'm considering it canon until we hear otherwise, since it doesn't dispute anything in terms of canon.