Hmm — The King of Limbs and TKOL RMX 1234567 are streaming now on Tidal. Don't recall those being on any streaming sites before.
Hopefully this means In Rainbows and its companion disc are on the way too.
Pretty sure the social media and website blackouts are in advance of a complete refresh for their announcement of a new album. XL is distributing their Parlophone-era back catalogue now too.