If you’ve forgotten about Lineage II: Revolution, the short version is that it’s like Lineage II, only it’s on mobile. (There is more to it than that, but we said the short version.) It’s a mobile MMO powered by Unreal 4 and available on your tablet, phone, or smartwatch. (You should not play it on a watch, though. You might be able to do so, but you shouldn’t.) And it’s coming out in June, in some capacity.
Why “some capacity?” Well, it’s not clear if the new site is indicating that the title will launch in June or just start beta testing in June. Both are possible. But the important thing is that when June rolls around, it’s got a date with some mobile devices. You can check out the full site if you want to see a little bit more about what the mobile experience promises players.