any documents for developing augments...?

I heard since v62, there comes augments! but I don't see any for now. 

I have many cool ideas that want to implement when it comes to live! ( hope I can use custom code so enrich it in many way like patching information from web with intended api etc...) 

when will it come to public release and there also come with document for dev? or is it already released but I'm the only one who don't find it? 

I just downloaded meta spark studio and player but it seems that it is only for Facebook and instagram not for meta quest augments...