May Strata 2012 will occur online this year. The cost is zero, and the event is tomorrow (May 16, 2012). The only catch is that you must register first. The entire conference is scheduled to take place in the morning, so the format looks quick. Judging from other Strata videos I have seen, I would guess this will be an event of high quality.
Thanks to DataGeeks-MSP for alerting me to the conference.