Speaking of 20th Anniversary, not much info available on this yet:
Underworld - Anthology 1992-2012, 3CD set:
http://cdon.no/musikk/underworld/ant...rt%5D-17050737
http://www.imusic.dk/cd/071129798422...y-1992-2012-cd
but it looks like "Big Meat Show" is getting an official release. Also, first-time digital releases for "The Hump" and "Minneapolis". Also good for "Why Why Why" for those who missed the Japan CD release. And "Parc (Live)" could possibly be something previously unheard.
Also due for release on the same day, 1-disc Underworld - Collection:
http://www.imusic.dk/cd/071129798442...-collection-cd
This one looks most notable for an unmixed "Beebop Hurry" and maybe "Cowgirl (Live)", unless it's just the Everything Everything version.
Thanks to chino for pointing out these releases.