I'd like to encourage everybody to come to SciPy this year. I think we should aim to submit a yt 3.0 talk that is jointly given by a few of us, and submit that to the main track and not the astro track. Additionally, there will be a WSSSPE workshop (http://wssspe.researchcomputing.org.uk/) and sponsored sprints, so it should be a really amazing week where we can present a lot of good work, discuss important things like scientific software sustainability, and spend a couple days working with provided food and whatnot.
I'm going to send out a draft of a talk abstract about 3.0 in the next few days; I think it would be quite a valuable thing to try to jointly deliver the talk, with whoever is around, or to have ambassadors getting data into yt over the course of the week.
On that sort of related topic, after the intensity of his last couple months, I'm going to be taking a break from travel, and I'm aiming not to be traveling anywhere (modulo day trips) between the yt workshop and SciPy, and then again from SciPy until probably November or so.