Google One, new Plans and Pricing is here. It is currently limited to U.S and coming soon to many other countries. If you already in Google Drive paid storage plan, then your storage will be automatically upgraded to the new tariff.
Also, Google and WhatsApp had come to an agreement recently, that WhatsApp backup file size will not be counted under Google Drive Storage limit. Which means, you can automatically backup whatsapp data without worrying about the storage limit.
As per the Google One, new tariff and pricing is very attractive.
100 GB Storage for $1.99 per month.
200 GB Storage for $2.99 per month.
2TB Storage for $9.99 per month.
For example, if you are already in 1 TB tariff by paying $19.99 you will be upgraded to 2TB Storage limit and next billing will be $10 less.
If you are waiting for upgrading to Google Drive Premium account, then now is the time. You get more benefits in coming days once its rolled out officially.