For someone who is on the eupgrade credit for qualifying flight pass activities track, look in Bundle 3 and see what the wording says. For Q miles (the other option), it says:

"This bonus applies to eligible Flight Pass activities completed between January 1 and December 31. Eligible Flight Pass activities are defined as the purchase of an eligible Flight Pass of 6, 8, 10, 16 or 20 flight credits (excluding Unlimited Flight Passes and Flight Passes for Business); the usage of every 10 eligible flight credits in conjunction with a Flight Pass for Business; or the duration of the travel period when you purchase an eligible Unlimited Flight Pass, on a monthly basis. Following an eligible activity, it may take up to three weeks for Altitude Qualifying Miles to be deposited into your Aeroplan account. "

So the way I read this is you get nothing (eupgrades or Q miles) for the purchase but you do get whatever you selected for each month which seems to correspond with wild1's experience. I get my bonus Q miles at the end of each unlimited pass month (not at the beginning when I pay!) -- that may factor in if you start a pass mid-month and are wondering when you get your credits.