According to this posted 2 hours ago by Car, the RS is likely to have 330-340 hp with a possible 500 version with 45 more horses ie 375-385hp:
Ford Focus RS power output to spiral before 2016 launch by CAR Magazine
Also, interior pic:
Also couple of new exterior pics:
Ford Focus RS power output to spiral before 2016 launch by CAR Magazine
Also, interior pic:

Also couple of new exterior pics:


