Hedwig National Tour Cast?

Looking forward to seeing this show on tour when it comes to Seattle. Was really excited about seeing Darren Criss in the lead role, but unfortunately he is only playing the first two stops on the tour. The official website says additional casting will be announced at a later date. Just wondering if anyone has any inside knowledge of who might be Hedwig on the national tour or when this could be announced? Thanks....

My question is: in the event of Lena as Hedwig will they have a standby Hedwig and will they be male, female or non-binary ? I mean Lena looks like she will be covering if Darren is sick and I wonder what they will do for the rest of the tour.