New rule on capital gains (cg) - important

Hi Sweet Guys out there.

I had a query about tax on Capital Gains (CG) on account of property sale.
I knew that whatever CG on account of property sale I have in a FY, if I invest in another property with proof, then it will not attract CG Tax.
But a friend tells me that new rules have come in from this year (2018) that if I have more than one property then I will have to pay tax on the CG amount irrespective of the fact that I invest or not.

Could you please enlighten me further.

Thanks.

<3