I nearly missed this, but it seems that the winners of the Sidewise Awards for alternate history were among the plethora of awards announced at the recent Worldcon.
The winners are:
The Big Lie by Julie Mayhew
“It Doesn’t Matter Anymore” by Bill Crider (Tales from the Otherverse)
From Nebula and Hugo Award–nominated Carolyn Ives Gilman comes Dark Orbit, a compelling novel featuring alien contact, mystery, and murder.
Reports of a strange, new habitable planet have reached the Twenty Planets of human civilization. When a team of scientists is assembled to investigate this world, exoethnologist Sara Callicot is recruited to keep an eye on an unstable crewmate.