Android Oreo was long waited in Samsung Galaxy S8/S8+, but not anymore. Samsung has started rolling out Android 8.0 along with UX9.0 to their Samsung Galaxy S8 & S8+. The update has initiated in Germany and will be out soon world wide.
Apart from Germany, Samsung is also giving priority to the beta testers, who will be getting the Oreo update in next 24 hours. The update version is G955XXU1CRAP & is just 487MB. Along with Android Oreo, they have also release the February Security patch update.
There is no expected date by when the Android 8.0 will push to other countries, but it is expected to be in February end & to some countries by April.
Apart from the Samsung Galaxy S8, other devices like the Note 8, Gagalxy S8 Ative, Note FE, & S7 is expected to be the next to get the Oreo update soon.