This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori 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.