FullBore Marketing, Mississauga, is the wholesale vendor for Arai and they have told me that Snell M2015 helmets are now available at retail.
As well, see below re Shoei.
Snell 2015 helmets have been available since roughly Oct of last year.
Don Bailey
Customer Service Rep.
Shoei Safety Helmet Corp.
http://www.Shoei-Helmets.com
(714)730-0941