Wait what? It said in the email it will be renewed on the last friday of the month, and the games would be unveiled on the following week (may 6th or something)
Yes, but the "renewal" is what you paid in advance for, to get Mad Max. It would only kick in a renewal if you had an existing subscription and hadn't gotten the advance game. You can wait and see what next month's preview game is and decide then whether or not to just let it renew at the end of the month, renew immediately (and get that game), or cancel. The bundle renews the Friday before it delivers. The June bundle will renew May 27th and deliver June 3rd.
Edit: go look at your humble settings page (where the cancellation link is) and you'll see something like this: