WSSSPE2.1 will be at SciPy in Austin on July 10, from 1:30 – 4:30. This was a lot of fun last year, with good discussions from existing projects in how they were working towards sustainability, and I think it will be good again this year. Matt Turk and I will be organizing the event.
WSSSPE3 will be in Boulder, CO, on September 28-29, for 1 1/2 days (exact times to be determined) with at least part of the following day used by the organizing committee to work on a report. If you would like to be involved in organizing WSSSPE3, please email email@example.com.
The web pages on https://wssspe.researchcomputing.org.uk will be updated as more information is determined.