The Meizu M8 isnt gonna have a SD-slot according to the specsheet, so no, you can't use a WiFi-SD-card in it. If it does have a SD-slot and doenst have wifi (which I highly doubt), than yes, you should be able to use a wifi-SD-card, but the M8 WILL have WiFi and most likely wont have a SD-card so the debate is rather pointless.
Btw, could you please stop using bold all the time, it's annoying