Netbeans 5.0 has been getting a lot of news coverage on the net recently since it’s 5.0 release, and in fact I don’t think I’ve noticed any significant Eclipse related news for some time now.
Netbeans 5.0 is probably the most likely IDE at this current time that has any chance of taking a share of Eclipse current install base. I think the Sun and Netbeans community guys also know this, and have an aggressive roadmap for where they are going with the IDE on their website, detailing new features that will be added through 5.5 and 6.0 releases.