Earlier in January we held a Low Latency-focused Developer Day event at our New York city offices (which had been a part of a trio of similar events held in London and Toronto just prior). Slides from that event are available here
Additionally, do keep an eye out for sometime in late May, early June timeframe - when our next Developer Day [Part XII] event will likely be taking place. (We'll be planning and announcing that shortly).
As always, if there are specific technical topics you would like to hear from Sun (or our customers) at that event, please drop me a note to isaac-AT-sun-DOT-com