This is apparently the special. This announcement came from Facebook.
http://www.facebook.com/PBSArthurI'm excited to announce that my one-hour special, "Arthur's Perfect Christmas," will be airing on PBS KIDS this holiday season (check your local listings). You'll have multiple chances to watch, including a special primetime broadcast on Sunday, December 16th!
Celebrate and help a great cause by sharing this fun holiday eCard with your friends and family!
https://www.facebook.com/PBSArthur/app_273592132743668For every 50 eCards shared, now through December 31, 2012, WGBH will donate 1 Arthur plush doll to a Boston-area hospital (up to a maximum of 50 dolls).