Wizards releases a lovely volume of UA playtest content, but as far as I can tell does no work to aggregate that content. D&D Beyond does a bit better, with synthetic pages containing UA content as applicable (e.g. https://www.dndbeyond.com/classes/wizard has two UA subclasses listed). What I'd really love to see though as a synthetic UA sourcebook that contains all the UA content active in D&D Beyond at a given moment. As a side-note, it would be awesome if there were some easy way to see what date a piece of UA content was last updated by WotC on.
Wizards releases a lovely volume of UA playtest content, but as far as I can tell does no work to aggregate that content. D&D Beyond does a bit better, with synthetic pages containing UA content as applicable (e.g. https://www.dndbeyond.com/classes/wizard has two UA subclasses listed). What I'd really love to see though as a synthetic UA sourcebook that contains all the UA content active in D&D Beyond at a given moment. As a side-note, it would be awesome if there were some easy way to see what date a piece of UA content was last updated by WotC on.
tl;dr: I'm asking for https://www.dndbeyond.com/sources/ua to exist.
I had also asked for a list of UA on DDB, and I finally got one:
https://www.dndbeyond.com/forums/dungeons-dragons-discussion/unearthed-arcana/55552-the-live-ua-archive
I doubt there will be anything like a UA sourcebook though. It isn't a bad idea, just different from what DDB does.