Hi! I would also like to know what is exactly the problem that prevents upgrading to a more recent version of Eclipse?
I think it would be really worth putting effort into getting the latest version (or at least a more recent version form 4.x) of eclipse into the next release of Debian. I could not find an RFH bug for Eclipse but I think one should be filed, because the current version, even in unstable, is almost four years old. Greetings Peter