Apple has rolled out iOS 5.1 Beta 2, where it will come with photo stream improvements to boot. This is pretty quick, considering how just a couple of weeks ago, Apple released the first beta of iOS 5.1 to developers. With a second beta already out for all and sundry to tinker around with, one of the features that many people will most probably find useful would be the ability to remove individual pictures from your Photo Stream. Guess what used to be a limitation in the past is no longer shackled by archaic programming clauses, as you can just remove unwanted pictures at your whim and fancy – something that folks figured out should have been there from the very beginning anyway. For Apple iPhone owners, have you given iOS 5.1 Beta 2 a go already, and how do you find it this time around? Did you manage to have any trouble getting it up and running on your iDevice?