I just downloaded the trial Premiere Pro CC 2014 and as Eric's test of the new i7-4790K data shows the new Premiere Pro CC 2014 really has major improvements in the H.264 and 4K areas. My first test on this laptop where exporting the timeline in the previous version exported our very complex H.264 timeline took about 355 seconds, it is now almost twice as fast completing the export in 185 seconds. I do not know if I will be able to continue the PPBM7 testing, that will be up to Adobe.
P.S. If anyone else runs that PPBM7 test the statistics file does not identify the correct Premiere version number, or it might throw an error message if you do not have Premiere Pro CC installed. The new version number of Premiere Pro CC 2014 is "Premiere Version:, 220.127.116.11". Quite a jump from "Premiere Version:, 18.104.22.168" and a wonderful performance enhancer.
for me : h264 test (ppbm7 /i7-4770k/gtx 770 sli)... 238 sec premiere pro cc 7.2.1.....and 88 sec with premiere pro cc 2014 !!! (mpeg2 test and disk test: no change with cuda, mpeg2 test with mercury software a little slower)