Google Search gets redesigned with mobile shopping tools, more product information

First off, you can now tap the “Quick View” button in the Google Shopping ad to preview details such as a larger image, product description, reviews, seller rating and so on.
The app will also alert users via a label when there's a “newer model available” if you're searching for a tech gadget and stumbled upon a last year's product.
Finally, something that couldn't have been missed by Google: shop by voice. With the help of Google Assistant, users will now be able to purchase needed items nearby by saying “Ok Google, where can I buy ...”.
source: Google
Things that are NOT allowed: