The Medallion boarding priority is a 2015 benefit, not 2016. I suppose you could say the DM Skyclub upgrade choice benefit is a 2016 benefit. I don't know if OP was just talking about choice benefits, or the overall 2016 benefits (which can, and likely will, change over the course of the year). Even the choice benefits can be changed later in the year (see note above about late change introducing RUC's/GUC's).