With Kris' lawsuit filed against his agency, EXO has confirmed, one day before their very 1st solo concert, that they will proceed with only 11 members.

On 21st, SM Entertainment put up a notice on EXO's homepage, "We are informing you that 11 members are going to perform on 23-25 shows to be held at the Seoul Olympic Park Gymnastics Stadium." The agency added, "The current 11 members are making effort to meet your expectations and promise great stages and performances. Please show a lot of interest."

Furthermore, on an interview with Dispatch on May 22, regarding Kris' parts (choreography, vocals, etc), SM stated that they distributed it among the 11 members and re-align the formations. They said, "It's not an easy task. Members are still trying to adjust with their newly assigned section."
-Dispatch 1

In fact, the members also sent a video message for their fans. Check out below: