It’s official now. Yesterday, Google Search has extended its reach to mobile application stores, namely Android Market & AppleStore. This search inclusion will not only help users to find applications they need, but also take them directly to applications they want.
As per Google Mobile Blogs:-
As of today, if you go to Google.com on your iPhone or Android-powered device and search for an app, we’ll show special links and content at the top of the search results. You can tap these links to go directly to the app’s Android Market or iPhone App Store page. You can also get a quick look at some of the app’s basic details including the price, rating, and publisher. These results will appear when your search pertains to a mobile application and relevant, well-rated apps are found.
Right now, this search is limited only to US subscribers, but soon to include other countries & devices.