Both of the aforementioned posts call out some preliminary details about JavaOne 2011. In particular, it is stated that "we expect to open the call for papers on April 27th and close on Monday May 23rd."
Wieldt's post states some improvements coming to JavaOne 2011 that at least partially address common criticisms of JavaOne 2010. These include acknowledgement of JavaOne being held at the same time as Oracle OpenWorld, but stating "JavaOne is being run as a separate, standalone conference, with its own fully dedicated conference space." This might be disappointing to the small number of people who actually attended sessions in both conferences last year, but I think most of us largely attended one conference or the other. The only time I went to Oracle OpenWorld was for the keynotes.
Other planned improvements for JavaOne 2011 include larger session rooms, increased exhibitor space, more time slots for content, more time and space allowed for collaboration, and "direct involvement from community representatives in planning/steering the event." The JavaOne 2011 main page currently states:
Java community take notice: JavaOne 2011 is exclusively yours. This year’s JavaOne conference brings Java experts and enthusiasts an extraordinary week of learning and networking focused entirely on all things Java.
JavaOne 2011 is now definitely scheduled for October 2-6, 2011, in San Francisco. Registration is now open.