There were about a dozen unclaimed winter dates after the lottery was run. It's likely that a few other dates awarded in the lottery will not ultimately be claimed. Those will be re-lotteried, if I understand things correctly.
That means you should get your profile current, check off the block saying you want to be considered for cancellations and unclaimed dates, and hope for the best.
I'll be meeting with Steve Sullivan from the GC River Office this weekend. If I can, I'll get some details on where things are headed now that the main lottery is over.
Have a good one.