Starting a new thread to host feedback for this preview.
Blog kicking off 3.0 and our Build 2017 announcements round-up: https://blog.xamarin.com/glimpse-future-xamarin-forms-3-0/
NuGet Feed: https://www.myget.org/F/xamarinforms-dev/api/v3/index.json
Weather App source: https://github.com/davidortinau/build2017-new-in-xamarin-forms