The old Maggiolina "Adventure" I had was a little different from the new ones. I had what they called a "winter hood" very thin waterproof fabric that went around the sidewalls , the top being fiberglass and insulated, didn't need it. The difference was the way it attached. You first installed a velcro strip to the inner lip of the drip rail of the roof. The the winter hood would fit to that, kind of backwards, with the velcro out to attach to the inner drip rail. When you tightened the drawstring under the tent, the winter hood would tighten up and you would have a little more than an inch of separation between the waterproof outer fabric and the breathable inner fabric. It was confusing, the new Maggiolinas use a much more straightforward system. The concept is the same, to separate the the fabrics so they perform better. I would think you could do this to just about any tent and make it better for cold weather.
I have the airtop tent and a winter hood, it attach with velcro like you describe, what is the new model you're talking about ? i don't see anything on the website