UPDATE (5/10): Ratings have appeared in Taiwan for PlayStation 4, Xbox One, and PC.
Hold onto your butts: Mega Man Legacy Collection 2 has been rated in Korea for PlayStation 4, Xbox One and PC. It will allegedly contain Mega Man 7, Mega Man 8, Mega Man 9 and Mega Man 10. Yep; Mega Man 9 and 10.
Now, it's too soon to say which version of Mega Man 8 will be included (PSX or Saturn) and whether or not Mega Man & Bass will make the cut. But honestly, just four games? There's gotta be a little something else in there (or there should be). Pending an official announcement from Capcom, we can only speculate.
Stay tuned for more updates! Hopefully we'll have news sooner than later.