thats awesome to hear. it seemed like it should have been a really fast, smooth application but it wasn't. This will pretty much just help out the fangirls to post more mirror pics of themselves, and post them faster.
It definitely should have been, even on wi-fi, but it was just awful. IDK how it was on the 4S, but I can assume it was more or less the same. That's true, but I'm not one to complain about hot girls with skimpy clothing on my timeline.
Facebook used HTML5 code to begin with so it could cross platform it easier. This updated is in the iOS native code and finally uses Apple's ADK which is why it is so much faster and smoother now. Now I am only waiting on them to write the Facebook app in java so the android version is smoother and faster!