Here are some of the screens from the update:
The changelog summary!
The main application's dual-tabbed screen: weather now and five day summary
The settings tab, despite the 'E6' mention in the changelog, has clearly got some tweaking still needed, with the 'Transparency' control completely unusable, off the bottom of the tappable screen! Roll on v4.2? Note the Wifi only checkbox, by the way.
And here's the main qooWeather widget, in place on the E6 homescreen and looking very pretty. Note that there's also a 'weather now' widget, though this is less useful in terms of what's coming up.
You can buy qooWeather (or update it) here in the Nokia Store.