It will become more difficult for the citizens of Ukraine, Georgia and Moldova to travel to Europe. In practise, the visa-free regime for Ukraine, Georgia and Moldova will end.
In practise, the decision reintroduces the visa regime. It will be more difficult to enter the Schengen area for the citizens of Moldova, Ukraine, Georgia.
Recurring pro-Kremlin disinformation on visa-free regime and ETIAS. euvsdisinfo.eu/report/shocking-news-eu-is-preparing-new-visas-for-serbians-this-is-the-end-of-integrations/,
The European Travel Information and Authorisation System (ETIAS) is not a visa. A visa free traveller does obviously not need a visa to enter the Schengen area, and ETIAS will not change this. ETIAS will be an automated IT system created to identify any risks associated with a visa-exempt visitor travelling to the Schengen Area. This concerns citizens of all visa free countries, currently over 60 countries including the US and Canada.
ETIAS is expected to be operational as of 2020, pending the adoption in the European Parliament and Council.
For debunking see also the Insider: theins.ru/antifake/101578,