IntelliJ 9 will come in two editions, community and ultimate editions.
Check out the feature comparison.
This is a great move for Jetbrains. For someone like me and thousands of other IntelliJ fans, we don't mind paying for what we believe is the most productive/pleasurable programming IDE out there. But many disagree strictly based on price. Well now, if you can't afford or have other reasons for not purchasing IDEA, cry now more :-), use the community edition and get addicted.