Though CONCACAF has not yet officially released a schedule for the next round, the Panamian and Honduran federations have both released the dates for next year's matches. It's easy enough to extrapolate Canada's dates from these lists.
(It should be noted that Panama's release lists the final two matches as occurring in November, but since their dates and days of the week don't agree, I'm going to assume that Honduras' listing, wherein the final matches occur October 12th and 16th, is the correct one).
The complete schedule for Group C:
|8. Jun. 2012||Honduras||Panama|
|8. Jun. 2012||Cuba||Canada|
|12. Jun. 2012||Canada||Honduras|
|12. Jun. 2012||Panama||Cuba|
|7. Sep. 2012||Cuba||Honduras|
|7. Sep. 2012||Canada||Panama|
|11. Sep. 2012||Honduras||Cuba|
|11. Sep. 2012||Panama||Canada|
|12. Oct. 2012||Canada||Cuba|
|12. Oct. 2012||Panama||Honduras|
|16. Oct. 2012||Honduras||Canada|
|16. Oct. 2012||Cuba||Panama|
Start saving your Air Miles, folks.