MacRumors reports one of their American users downloaded Disney+ plus on their Apple device, and switched to their French and UK Apple ID revealing the possible pricing in Europe.
In the U.S.A. Disney+ costs $6.99/month or $69.99/year.
It appears it will cost €7.49/month or €75.99/year in Europe (in France, at least) and £6.99/month or £68.99/year in the UK. This is a price increase over the £4.99 DisneyLife service we currently have, but will include National Geographic, Star Wars, Marvel content and more, which DisneyLife does not currently offer.
Keep in mind these prices haven't been officially announced by Disney and can still change before the service launches.
If you're a subscriber for DisneyLife, they have announced that come March 31st, 2020 the service will be discontinued and you'll be prompted to upgrade to Disney+.
Due to licensing agreements currently active, it is unclear how much of Disney's content will be available at launch here in the UK.
Disney+ will be available for us Brits in the UK on March 31st, 2020.