This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
There is support for NetBeans and IDEA 9 already. Eclipse does not have specific support yet, however you can open a Griffon project as a regular Groovy project and use Eclipse's Ant integration to launch griffon commands.