From Sanjeev Arora:
Theory fest is an expanded/enhanced STOC with a raft of exciting events and activities. June 19-23 2017 in Montreal. Please check out the full schedule at http://acm-stoc.org/stoc2017/
The registration portal is now open. Despite a 5-day schedule plus evening poster+beer sessions, the early registration fee has been kept down to only US$380 (and US$210 for students). We hope to see you there! Early registration ends May 21.
Note that it is still possible to submit a poster until May 1; the call for posters is http://acm-stoc.org/stoc2017/callforposters.html