TheDigitalBits.com posted that retail and industry sources have informed them that Disney & Lucasfilm's Solo: A Star Wars Story will arrive on Blu-ray & 4K Ultra HD on 9/25. The official announcement will be coming soon.
If you want to get the 3D version of the movie you will have to import it from outside of the United States, because it looks as if the 4K and BluRay/DVD/Digital versions will be the only formats the movie will be released on in the United States.
If Hasbro follows their own template from the past few years, we should see the rumored Star Wars action figure 4-pack around the same time.