Marcomadia Flash 7.? to 8.?

Right on time Macromedia asked me if I wanted to update from my current version 7.something to 8.something. (I did not pay much attention to the exact versions and it asks me every 30 days) My question is do these latest and greatest updates do anything I should be aware of? Such as removing or messing up funcrions I can do with the system now. I have become so paranoid I turned MS$ updates off a long time ago waiting for the mother of all updates, you know the one made to look like a service pack that turns the functionality of your system into an even bigger turnip. Thx