Since December 2009 GlassFishESB version 2.2 is out.

Note that It still has the GlassFish Application server version 2.1.1 with Netbeans 6.7.1 as it’s core.
The main change are in the ESB component upgrades. Also the WLMSE and the HL7 components are now only available for Supported customers.

For more information please go to: https://open-esb.dev.java.net/Downloads.html