And the wording depends on where you read. From the online rebate form:
"Purchase any NEW M&P SHIELD® pistol, M&P® BODYGUARD®380 pistol, or S&W® SD™ or SDVE™ pistol and receive a mail-in rebate.
Offer valid April 1 - June 30, 2017"
Rebates | Smith & Wesson
No use of the word "model" there...