So no fake Ukulele Hero story this year, dear readers. However, it does turn out that there's something floating around about there being a ukulele tune coming out for Rock Band:
"Portal's highly quotable protagonist, GLaDOS, is coming to Rock Band. The end credits song performed by the rogue A.I., "Still Alive" [and written by Jonathan Coulton, ed.] will be a downloadable for free in April."Link
Update: Uke tabs here!