Google has rolled out major updates to their Google Shopping platform for an optimized viewing on smartphones and tablets.

The company said:

We designed this new shopping experience to fit naturally with the activities people love to do on their smartphones and tablets.

Just like on desktop computers, Google Shopping for mobile makes it easier for your customers to find and compare different products. Product images enable shoppers to make quick visual comparisons while browsing products. Search refinements, now on tablet devices, help to surface the brands, features and price point they want, so shoppers can easily buy the product they want from the merchant of their choice.

They also announced some incentives for businesses to join the Google Shopping program:

Both new and existing merchants who create Product Listing Ads by August 15, 2012 will automatically receive a monthly credit for 10% of their total Product Listing Ad spend through the end of 2012; and
Existing Google Product Search merchants who are new to Product Listing Ads can receive $100 AdWords credit toward Product Listing Ads if they fill out a form before August 15, 2012.