There is a very good chance that the 7DII will be announced in January or February next year.
If you can wait that long, you will be able to make a more informed decision.
That may be true, but as Marsu42 already said, April could be true as well.
Announcement and actual availability to purchase are two different things. It is highly possible that the 7D MKII may be available in September 2013.
All in all speculations.
Look for what specifications in a camera are really important to you and if you need it now, don't wait and miss those great shots you can do now.