Well the data icon went back to H+ from 4G. Moving between screens and apps feels snappier. Touch keyboard feels a little more responsive but that may just be wishful thinking.
I had an issue in kk1 where the touch screen became entirely unresponsive when laying flat on a table. That seems to be gone.
Fyi I didn't factory reset. I just flashed over kk1 and it kept everything. I'm not rooted nor am I running a custom kernel.
Sent from my infuse
Current: Nexus 4 16GB | Galaxy Nexus 16GB
Tablets: Nexus 7 16GB | Microsoft Surface RT 32GB
Previous (sold): HTC One X+ | Nokia Lumia 920 | Nokia Lumia 900 | Nexus S I9020A | Galaxy S II I-777 | Infuse 4G I-997 | Nexus One