The 7d has poor noise performance and IQ even at low ISO's. The 7d2 will definitely use one if not two dual digic 5+ processors which are phenomenal. AF will very likely be improved as well.
^To OP, get a 1d3 or 1d2n then! If you think 19 over 9 is great, wait until you use a 1d's AF system. Legendary.