According to THR, Firth returns as Harry, but he's now sporting an eyepatch. (How very Nick Fury.) Egerton had already teased the return of his Oscar-winning costar last year:
We also learn that Eggsy and Merlin (Mark Strong) are going up against an underworld organization whose members are unidentifiable, having removed their fingerprints and filed down their teeth.
The sequel opens September 29.
The official poster was released yesterday, with Egerton holding what looks like Indiana Jones's bullwhip.