I very much doubt that this will happen. Disney already has the streaming service Hulu in the USA that carries the more adult content that it doesn't want to show on Disney+. Like the series 'Love, Simon' that it originally created for Disney+ but moved to Hulu earlier this year.
Maybe outside of America it might make sense to include a mature section to Disney+ but I think it's much more likely that they would launch Hulu in other countries than have different versions of Disney+. There have been rumours for a while that Disney intends to launch Hulu in western Europe in the next couple of years.
Also, the website that this story seems to have been sourced from, wegotthiscovered.com, is notorious for just pushing any old rumour about the tv or film industry. One or two in ten of the stories that they cover might come true but most of it just cobblers. Not to be trusted.