Recently Sun dual licensed its IDE, NetBeans 6. That means the code is open with both CDDL and GPLv2 (with Classpath Exception.) What would this mean? It would mean that all the GPLv2 based distributions can ship the NetBeans IDE easily. Better reach, better for integrations. (I am not a license expert and won’t comment on the finer details of this dual licensing.)
BTW, downloaded NetBeans 6 Beta recently, but am yet to test the full power of that.