I can confirm off-season imps from legendary guild tasks. My guild got an Autumnal this week.
Updated March 20th
Added to chests:Obsidian Golem Gog and Gud
Off season imps from legendary tasks is a feature, not a bug.
Updated March 27th
Added to chests:Bog Strider (March 27)Marsh Strangler (March 27)
Updated April 3rd
Added to chests:Dragonian Monk
We should switch Imps either monday or friday.
Also put the Guild War troops in the "not in chests" lists since they are normal kingdom troops and might be confusing.
I believe Spring Imp should be going into chest with the weekly reset.
Necrezza seems to be available already. Pulled a second from guild chests last night. No idea if this is intended.
Updated for April 17
Archdruid added to chests, and all the Suncrest troops except Prince are in as well.
Necrezza is confirmed to be in chests as well.