Both Thom Yorke and Nigel Godrich posted this mysterious white vinyl on their social media.
http://consequenceofsound.net/2014/09/thom-yorke-throws-earth-off-its-axis-with-photo-of-mysterious-record/
http://pitchfork.com/news/56801-thom-yorke-shares-photo-of-mysterious-white-record-album-speculation-ensues/