The Ultimate Universe has been reborn, with the new version of the alternate take on Marvel Comics radically changing the company's most iconic characters. This resembles what the original Ultimate Universe did decades ago, allowing readers to see a fresh reimagining from the ground up. Likewise, it also resembles another set of divergent versions of superheroes, albeit from another company.
Source:https://www.cbr.com/ultimate-marvel-flashpoint-new-52-dc-comparison/