If we believe on some users reported on Twitter, a viral message is being distributed on WhatsApp tricking them to download the 'WhatsApp Gold' version, which is very harmful and create a disease on your smartphones.
The message you also have got saying that 'WhatsApp Gold' was until now used by 'big celebrities' and includes some new features like video calling, ability to send 100 images at once, free calling, ability to change WhatsApp themes and more.
Further message continue with saying 'WhatsApp Gold' is not available to all users and can be installed only via invitation.