As first spotted by Aaron Wall and mentioned on SEO Roundtable, Bing is now testing showing website previews and sitemap results directly from the instant search box:
The Bing feature that is a drop down sitemap on brand queries right from the homepage search box (no SERP page) pic.twitter.com/z5BgK4Yz0R
aaron wall (@aaronwall) September 4, 2013
However, when both SEO Roundtable and myself tried searching for the same term, as well as others (including website names, celebrity names, and other well-known terms), we didn’t get the same results that Aaron did. This was the same result for logging into Bing and accessing the search engine from an incognito browser window:
The only additional available information that was shown in my searches was instant preview, which was dropped as a feature by Google earlier this yeardue to low usage numbers, after being launched in 2010.
Further investigation on the testing of interior site link display in instant search results, including why the feature is available to some users but not others, hasn’t yielded any further information. Unless Bing releases an official statement via their blog about the testing, no information is known when (or if) it will be made available to all users.