[W. Knight]

Existing HBO Max regions (Nordics, Spain/Andorra, Portugal, Central & Eastern Europe, the Netherlands) will get the enhanced service shortly after the roll-out in Latin America, both will happen during the Spring

France and Belgium will also become the first non-HBO Max territories to get the new Max service, will launch on Summer, before the Games

We have an exact date for Max's further rollout: First to the Nordics, Central and Eastern Europe in May 21, then Poland, France, the Netherlands and Belgium in June. Specifically the HBO Max name is kept in the last two, not to be confused with existing broadcasters (Omroep MAX and VRT Max respectively).
deadline.com 

3 new French dramas were also announced to boost its debut profile.
tbivision.com 

Interestingly, MAX channel in Norway has been renamed to REX ahead of the rollout.
presse.warnerbrosdiscovery.no