Mechani-kon has recently opened registration for their event on October 26, 2013. According to reports from Winnipeg is Nerdy, they have already filled about a third of the 30 spots available for the 40k tournament.
Check out their website for registration and event information. The 40k tournament is a great time and brings out lots of cool armies. They will have other games available too, including a Warmachine tournament and some open tables for board games from JimCon.
See you there.