Deletion of FictionBook

Comment: possibly speedy G11.  Definitely promotional (and possibly unsalvageably so), so I need to leave that to other judgement.  Quick gsearch doesn't show much for this without breaking the name into two words - just the spec and this article - and what exists are |primary sources at this point.  Can anyone find some tech journals that cover the format in better detail
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:RS)