HTML5 Demo Watch
Both have me thinking this is really close, then I remember one of my favorite periodical apps, Financial Times went HTML5 more than a year ago. FT went HTML5 to better manage the multi-platform development process needed for iOS and the multitude of Android versions. While many have said the development is roughly 1.5x what it would take for just one platform development it does same incredible amount of time building an app across all platforms. Since all the major smart phone platforms have their native browsers built on webkit, there is some smart thinking in that approach.
Personally, my big niggle with the FT app is while it is browser based doesn’t have Instapaper built-in and it moves me out of the app to send a link of an article (often to myself because lacking Instapaper) rather than natively in the app, or exposing browser chrome so that I can do that while still remaining in the app and in reading their content mode. It would be really smart for FT to sort this out and fix these as it would keep me in the site and service reading, which I am sure they would love. If they could treat both of those like they do with Twitter and Facebook sharing out all within the app it would be brilliant.