Microsoft has started to switch on several Bing HTML5 features this week.
The software giant has turned on transitions and some of the new UI elements for several users. WinRumors readers have notified us that they are now seeing the new interface. Microsoft made a preview page for Bing HTML5 available in early March before taking the page offline. Bing’s HTML5 will include smooth animations to allow users to jump backwards in their search history. Bing will also introduce small, hovering windows as you scroll down the screen to keep navigation tabs in view. Bing will also enable animated pictures and automatically generated slideshows so users can visually explore a search query.
WinRumors reader Vincent sent the following screenshot of the transition UI:

HTML5 transition UI
Bing will also introduce an “instant” search similar to rival Google. The instant search will allow page elements to automatically transition as the user types their search query into the bing box. Microsoft has also changed the UI of some search results, WinRumors reader Mike kindly sent the following screenshot:

New Bing weather UI
Microsoft demonstrated its new Bing UI earlier this month. The company is currently randomly selecting users for an initial feedback phased and is expected to roll the new interface out fully next week in time for its MIX11 conference.