For Ukrainians, at least those outside of Ukraine, this is old news. For Ukrainians in many parts of Ukraine who grew up under the heel of tsarist and Soviet russification, this is new news. Finally the powers that be are getting off their knees, and beginning to hold their heads high.
The Russians will be spitting mad. How dare these Ukrainians say this? The fact that it's true, and that the Russians and their scholars have been deforming history, well.... empires die hard. Now to get around to fixing all the Western academic books on the archaeology of "southern Russia," the relations of Byzantium and "Russia," early Rus' history, and so many other aspects of scholarly disinformation.
This is an enormous undertaking, because not only does the information have to get out into the academic and popular world, it first needs to reach Ukrainian historians and other scholars. So many of the older generation have been spouting the party line history for so long, they think it's true. The Ukrainian academies, esp. the Akademiia Nauk (Academy of Sciences) needs to get new blood, not thinking along Soviet pro-Russian anti-Ukrainian lines. Amazing that some Ukrainians who studied under that system still do not look objectively at the sources and at the Russian manipulation of history over the centuries, and feel inferior to the Russian imperial mindset. The documents and material are out there. We just need to reclaim them and put them out there for the world.