Probably after the inception of the new M&P pistols, just an assumption, best bet would be give S&W a call. They could answer with a much more defined date.
By Email:
[email protected]
By Telephone:
1-800-331-0852 (USA)
Mon-Fri 8:00AM-8:00PM Eastern Time
1-413-781-8300 (International)
Mon-Fri 8:00AM-5:00PM Eastern Time
By Fax:
1-413-747-3317 (USA)
1-413-731-8980 (International)
By Mail:
Smith & Wesson
2100 Roosevelt Avenue
Springfield, MA 01104