Via Sasho Nikolov: the deadline for the Theory and Practice of Differential Privacy (TPDP 2018, co-located with CCS 2018) is now:
July 27, 2018
This was done to avoid conflicts with SIGMOD.
Submissions of already published work is also allowed, as long as it was published after the last TPDP. The goal is to get people in the room. The formal CFP is here.