EXO members doing the four sign" rumors:
- EXO comeback
- Comeback in April 2015
- SHOWTIME season 4 (EXO again)
MBC everyone has announced that they will be filming a 4 season "SHOWTIME"
but the group has not been revealed yet. However (OP) feels that it might EXO because recently some exo member have been randomly showing the 4 sign and this season of Showtime just happens to be the 4th season. They might be thing at this.