Barry Broskowitz and MTH service techs, have there been changes to the DCS wifi module since the first one was made?

While the TIU has had improvements to it's software, electronics, and components in its different versions manufactured over the years I've been told the parts and eletronic components in the remote have been virtually unchanged but how about the DCS wifi module? Are the electronic parts and components in the most recently manufactured ones the same as those in the first DCS wifi module made by MTH? I'd like to know since I want to support my LHS and buy the wifi module there but since he sells very little DCS so I'm concerned if I'm sold a wifi module he's had in stock since they were first introduced it might not have the most up to date parts and electronic components.