Han,
The new features you mention are being introduced incrementally in MyEclipse 4.0. Right now we’ve delivered the first milestone build of 4.0 and will deliver milestone 2 in a few days with even more features. However, since version 4.0 is not a production release, it’s only available for download as a manual installation so that interested users can try it out and give us feedback about it in the new 4.0 Development forum here: http://www.myeclipseide.com/PNphpBB2+file-viewforum-f-33.html
Please note that for all production work you should continue to use version 3.8.4. If you’d like to try out the new features in 4.0, please install a new release of Eclipse 3.0.2 in a separate location and install the latest 4.0 milestone on it for testing. The 4.0 release is available in its own folder in the downloads section. At this point, I’d recommend that you wait a few days for 4.0M2 as it will have a lot more capability that 4.0M1.