I'm in for both: 11/15/2017 at IYC, and 6/23/2018 at the start line.
As far as the seminar goes, the agenda sounds great, but it would be really nice if we had the 2018 RRC by then. It doesn't seem prudent to be spending money based on the notion that the SER for 2018 will be exactly the same as 2016.