|These all have URL’s of “http://images.neopets.com/neoboards/avatars/…”
Will they ever be released? Maybe, maybe not. Some could just be prototypes and will be changed into something different. Only the Neopets team knows for sure.
Also, regarding the Zurroball Blink Avatar, NO you cannot get it by playing Zurroball… not at this time anyway. This was confirmed to us directly by a Neopets Staff member.