According to both the Voice of the Nanaimo Clippers and the Official twitter feed for the team, it has been confirmed that the four western Canadian Junior A leagues (SJHL, MJHL, AJHL and BCHL) will indeed combine, plus a host team, for the first ever Western Junior A Championships, to be held at, at this time, an unknown place in B.C. from April 26 to May 5, 2013. The Clippers are looking at hosting this Championship.
More info to come.
UPDATE: Dan Marshall, voice of the Clippers, also mentioned that to fit into the RBC Cup still, two teams from the Championship will advance.