What's new about Google Instant or what's all about this? Here's what
It’s a simple and straightforward idea—people can get results as they type their queries. Imagining the future of search, the idea of being able to search for partial queries or provide some interactive feedback while searching has come up more than a few times. Along the way, we’ve even built quite a few demos (notably, Amit Patel in 1999 and Nikhil Bhatla in 2003). Our search-as-you-type demos were thought-provoking—fun, fast and interactive—but fundamentally flawed. Why? Because you don’t really want search-as-you-type (no one wants search results for [bike h] in the process of searching for [bike helmets]). You really want search-before-you-type—that is, you want results for the most likely search given what you have already typed.
---- Watch the video below to know more about Google Instant, instant search Google :)