On the one hand, something is clearly needed which "refreshes" the platform. On the other hand, you don't want to freak people out by changing everything. The OP's article seems to say that they are leaning to the latter. I guess we'll see. At the bare minimum, I hope they can get the weather app's temperature to show the real temperature.
I will say that the new Yahoo Weather app for iOS is very flat (all info in one screen.. which is "flat" to me but maybe I'm not using the term correctly) and it looks awesome.
http://reviews.cnet.com/software/yahoo-weather-ios/4505-3513_7-35739508.html
I immediately deleted the iOS weather app and move the new Yahoo Weather one in it's place and I never miss the old one. If the new interface looks anything like the redesigned Yahoo Weather app, then I'm all excited... and come to think of it, the new Yahoo Weather app does look a bit like Window's Metro... sort of.
Off topic a little bit, but that Yahoo weather app is off the chain! It doesn't have as much info S WeatherBug has, but it gives me like 80% of what I want and looks 1000x better. I love the images it pulls for locations and stuff too.