Yeah.. a question about the differences between OS upgrades isn't really something someone can just "sum up" to someone that doesn't like reading.. it's a little more complex then that..

A question like this is best served by reading those 100 posts and seeing exactly what the differences are and what they do... that will tell the OP whether to upgrade or not..

If all they wanted were highlights.. then they can get that from the changelog at nokia's website; not on a forum on itT.. but those changelog's aren't descriptive; and a summation of a changelog would be even worse.