Easy answer if you ask yourself this question:
Love, like or hate your L822?
November is a little ways off, but if your L822 is doing the job and you still love it, hold out. Enjoy your WP, and do not worry about what you are missing. If you love your current phone, you are missing nothing.
Since you are asking, I am guessing you do not "love" the device. Do you still like it? I would say waiting at least until the end of August beginning of September would be good. By then, rumors will start to leak out and you can gauge if the Icon will be the best bet for you or not.
Are you bored/tired/unhappy with your L822? The Icon is , in my opinion, the best available WP on the market today. It is worth upgrading early for.
I believe the Icon will still be a great phone in November and supported for years after that. Base your decision on the L822 you are using now.