Fighter Archetype (Inspire Courage)

[Molosse]

Cheeky thread here, saw recently that a soon-to-be released book will include a Fighter archetype that includes class features pushed towards a support/teamwork role. However I've bloody forgotten what book it is, does anybody possibly know which book it's going to be in?

[Doc_Maynot]

I know Adventurer's Guide is coming out in May, but I haven't heard anything on its archetypes.