Why not release Red Hat Developer Studio under Eclipse.org instead of independently under JBoss.org?
Eclipse.org projects use the EPL (Eclipse Public License). Red Hat is looking to license Red Hat Developer Studio under a GPL-based license. This license would be incompatible with the Eclipse license. Red Hat is also considering adding more JBoss-specific tooling that will bring better user experiences for developers using JBoss runtimes. This again is not suited for Eclipse.org, which is geared towards general purpose tooling.