With Java One being one of the premiere conference for Java technology, many new releases and features are unveiled at such an event. Just a day into the conference, the blogsphere is already posting on such topics
Over at Artima you can find a conversation with Azul's Gil Tene on 'Breaking Through JVM Memory Limits':
http://www.artima.com/lejava/articles/javaone_2009_gil_tene.html
Over at Eclipse's blog site you can also find the post entitled 'Java One - Good looking apps with RAP':
http://eclipsesource.com/blogs/2009/06/01/java-one-good-looking-apps-with-rap/