1. the current firmware upgrade even if it is free is: too little, too late
2. rather than this hyped, free FW update I would have preferred Canon to provide an open interface for third party software providers like Magic Lantern for the 7D. THEN we would be receiveing firmware updates that would be truly innovative and worthwiloe. Rather than the lukewarm Canon software junk.
3. Buffer depth: the table at the bottom of Canon's marketing info on firmware 2.0.X, http://www.usa.canon.com/cusa/consumer/standard_display/EOS7D_firmware_compare
and the small print at the very bottom state, that RAW buffer goes from 15 to 23 frames in succession if a 8GB CF card ("standard speed" - whatever that may mean) is in the camera. 25 RAWs in succession were achieved using an UDMA-7 CF Crad with 128 GB (unfortunately they don't say which specific make and model). The smallprint footnote states, that UDMA-7 is not supported by the 7D (irrespective of firmware version). UDMA 7 cards operate at the same speed as UDMA-6 cards in the 7D. Unfortunately Canon leaves it open, whether 25 RAWs in a row could also be achieved with an UDMA-6 card and/or with CF cards smaller than 128 GB.
So I guess we will have to wait until Rob Galbraith tests the new 7D firmware with CF cards of various speeds and sizes. I hope he is gin to do this.
My take on this is, that Canon has tweaked the firmware a little bit to make better use of faster CF cards - but that's all there is to it. Many users report that they do get 24-26 RAWs in succession with thze 7D and current firmware plus some of the faster CF cards.
Certainly this firmware upgrade does NOT make the 7D a new, better camera. It is basically the smallest possible patch to some of the shortcomings the camera had all along. This is not to say, it is a bad camera - I use one myself and generally am fairly happy with it. However, items like Auto ISO, exposure bracketing and some other lacking or poorly implemented features could and should have been fixed much better and much sooner with one of the many firmware updates we already had. Rather than just correcting spelling mistakes in the Greek or Korean language menus.