Universal's targeting a July 6th filming restart in the U.K., with extensive (and expensive) health guidelines...
Universal’s Jurassic World: Domininion is to set to be the first major studio movie back into production in the UK, we can reveal.
deadline.com
I think it's still
technically possible they could make their original June 2021 release date if they want to spend the money to accelerate post-production effects work. But, even though June's the traditional JURASSIC slot, if I were Universal, I'd move it to the first weekend in August of 2021; that would buy them another two months to partially make up for the three-ish they've lost in the shutdown, and it still gets to be a summer release. I can't see them pushing the film back an entire year.