Alternate IE9 search engine in Mango?

The eagle-eyed folks at have noticed that the options page for Mango’s IE9 as seen in this video above (skip to the three-minute mark for the options) includes a new field – “default search engine”. It seems with Mango Microsoft are broadening the choices available for IE9’s search bar – and, potentially, the one-press search using the phone’s hardware button.

Thanks to Clarkk for the tip.