As a part of it's continuing design revamp across all it's online properties, search engine and internet major Google has been testing a new revamped login page for it's GMail (Google Mail) and Google Accounts services. Google is currently displaying the following message on the GMail and Google Accounts login page of various users:

Coming soon: A new sign-in page! Preview it

You can try the new Google login pages from this link: https://www.google.com/accounts/OptInToNewSignInUI

In order to switch back to the Old version of the Google Account / GMail Login pages, click this link: https://www.google.com/accounts/OptInToNewSignInUI?optout=1

Below you can find some screenshots:

New GMail / Google Account Login Screen

New GMail / Google Account Login Screen with Captcha

Old (current) GMail / Google Account Login Screen