DoC just announce there is some kind of event on April 16th, so its possible they will announce it then. SPG points would just be your standard Marriott points. No more transfers to airline, although the flight and hotel package might still be around, some ppl are speculating some changes there.
Someone also posted a guess that there will no longer be categories, but more based on pricings... the only upside to this is no blackouts, the downside is of course, more points to spend. This could be another devaluation idea.
Honestly, if everything plays out the way it does, theres gonna be a lot of SPG rioters. Perhaps Hilton will get a lot more ppl instead haha. Heck, im considering it now.
I have points saved up for an Emirates First Class ticket right now that i wanted to use in the future... im not sure what to do with my points now if they go to Marriott. My portfolio will def go down in value.