The Portlet 2.0 specification (JSR 286) has been a long time in the making. In my mind, maybe a little too long. However the promise of having an event model for inter portlet communication between different vendor implementations and indeed Portal servers in one or more locations, through WSRP 2.0, is very exciting.
I found a good article on IBM Developerworks – What’s new in the Java Portlet Specification V2.0 (JSR 286) , where "Figure . A sample portal page" is showing events between various types of portlets. Its good to see integration with Google Gadgets, which I noticed originally (blog entry here) could not participate in inter portlet communication. Now, I’ve been wondering why IBM has been delaying the release of WebSphere Portal 6.1? So I did a search on google to see if WebSphere Portal 6.1 would support it. Low and behold, there was a forum entry saying that current WebSphere Portal 6.1 Beta does. Looking between the lines one would assume that just after the Portlet 2.0, specification is released we will see WebSphere Portal 6.1 become GA.