Right on the heels of an Android update, Facebook's also gave its iOS iteration a similar refresh. According to the short iTunes listing, version 5.3 gives a speed boost to your news feed, with the primary social news page now loading updates quicker. We just updated the app on the iPhone 5 and there's certainly an improvement on news refresh speeds and when scrolling down to grab older updates. The new app also lets you designate which album photos are uploaded to -- a convenient addition if you haven't already automated that whole upload-to-Facebook thing.
Source: Facebook (iTunes)