Eclipse 3.3M5 has a few nice features, but of particular note for Teams is the ability to define a per-project setting for what happens when you save files -- optimize imports, reformat code, and so forth. This'll be good for teams that have already standardized on the use of Eclipse.
Other features that are new and notable in the JDT:
- Rename Refactoring in Java Editor (inline, no dialog, but still affecting entire workspace)
- Completion for Static Import or Catch Clause