It has already leaked on Twitter and on some blogs, eXo and JBoss released the latest and greatest GateIn 3.0 Beta 3. The changelog is quite large so I will only emphasize the fact that we worked a lot on performance improvement and fixed a lot of reported issues.
We also added some basic examples of portlets to show the required configuration files. We hope to find the time to go through them on this blog but you can already have a look here. (note the empty web.xml file, less configuration, less headaches).
If you happen to understand French, Nicolas Martignole wrote a series of articles on GateIn Portal, thank you Nicolas: