The first Disney resort guests are now receiving MagicBand 2 bands in the mail. @ on Twitter posted an image of the bands he got in a resort-stay box. MagicBand 2 style bands have been sent to Annual Passholders for the last few weeks, but now resort guests should be getting them as well more and more throughout the rest of January. I am not yet sure if this is for specific resorts, or if this is rolling out to all guests now, but it looks like the change is now happening for non-AP vacationers.
I expect to see solid color MagicBand 2 bands available for purchases with in the Walt Disney World parks sometime this month as well.