New Mega Man characters are joining into the cross battle, according to the latest Famitsu. Tron Bonne and her Servbots (or at least one of them) will be part of the game along with X and Zero. Curiously, in what's appeared in Famitsu so far, Tron does not seem to use her Gustaff mecha. However, she does get to put her Servbots to great use, and even rides atop a giant one. Also, it's hard to make out, but it appears Tron and co. are fighting the dreaded Sharukurusu Reaverbot. That WOULD have to appear.
We have confirmed as well that the characters will retain their previous voice performers, with Mayumi Izuka voicing Tron, and Chisa Yokoyama voicing the Servbot(s).
We'll do our best to keep you posted as more developments turn up. Stayed tuned!
Update: Image added! Thanks, Magnet_Man!
News Credit: Andriasang