Pretty much nothing 'DiS relevant' comes out in December, and anything due last week of November (which includes Mr Oizo) have already been announced. So let's get giddy for a minute gazing forward to 2012.
I haven't done much digging as to what's due as yet but for starters I'm excited about the prospect of new records from The Shins, Grizzly Bear, Blood Red Shoes and, having just heard the new track, got a feeling Errors will be early contender for album of the year: http://drownedinsound.com/news/4143928-errors-announce-new-album-download-new-track-now (love that band so much!)
Also hoping for new stuff from DiS-favourites: No Age, HEALTH, Yeah Yeah Yeahs, Liars, The National, Nick Cave, Fuck Buttons, Phoenix, Beck (or at least some more Beck-produced acts), Deftones (although I've got a hunch Chino's Crosses record will be immense!), Bat for Lashes, Metric, Andrew Bird....