https://wccftech.com/here-is-when-one-u-i-3-0-will-arrive-on-your-samsung-phone/

It seems like Samsung is hard at work when it comes to pushing the latest One U.I 3.0 on their Galaxy devices because we have seen numerous open beta programs from the company, and Samsung Egypt has now shared a roadmap that tells us when the Galaxy devices are going to get access to the final update.

Remember that this schedule is for Egypt, so updates could either arrive earlier or later, depending on the region you are in.