Though the updates are few and far between, the official Engadget app managed to get a significant bump to version 2.0 tonight. New features include a slight re-design of the UI, fast-app switching, Live Tile, background updating (over WiFi when on AC) and an overall smooth performance.
Of course that's on top of the already existing features including photo galleries, full articles, ability to comment, podcasts and more. Plus you can even submit tips via the app, allowing you to generously give them plenty of WPCentral links, amirite? Overall a pretty solid app and a great update. You can pick up Engadget v2.0 here for free in the Marketplace. Thanks, Peter M., for the tip!