Mine only weighed in at 160Mb when I downloaded it… strange? Maybe 160Mb is the compressed size? Anyway haven’t noticed any real differences, think its just bug fixes and some performance improvements but I get obsessive with running the latest versions all the same :)
I make it a habit of waiting a while before applying system software updates, more often than not they throw up a few conflicts I tend to let other people try them out first. Wouldn’t be the first time that a scanner suddenly stopped working or that little bit of obscure software that you rely on gave up the ghost.