It's hard to keep up with all the changes that have occurred in the last ten years. As the previous poster suggested, I would suggest getting the Birnbaum book for a quick primer on what is there now. Also, continue to peruse these boards - you'll find lots of good information within the discussions that take place.

One thing for sure - you will find the parks more crowded than before and you will find many rides (which used to be walk-ons) with fairly long wait times so be prepared that you will not be able to do as much on any given day as you might have been used to in the past. This will make it more important to prioritize those things that are most important to you.

Please post any specific questions you may have - I'm sure folks here will be happy to answer!!