The holiday is Veteran's Day, Thursday the 11th.
Just like Thanksgiving, not ALL resorts are blocked out that weekend. You may find availability at Coranado Springs or the All Stars. Also, the Boardwalk was showing up. It may be a glitch, or WDW may have intentionally left them open because of soft bookings at those resorts. Try now before they book (or fix the glitch if that's the case.)
PS, I just checked online using the link on WDW's home page. I'm getting availability at many resorts using the code for checkins on the 10th. I'd bet it's a glitch, jump on it before it goes away.