Today Google released a new version of Google app for Windows Phone devices.
App description:
"The new Google Search app for Windows Phone. Find better results using Google from your Windows Phone. Search the web faster and easier with the latest features: Google Autocomplete, My Location, and Voice Search.
Voice Search: Search by voice and skip the typing
Google Instant and Autocomplete: Get search results faster
Search Nearby: Find places near you without typing your location"Google app is available for download from the WP Marketplace