A lot of people jumping the gun on what this may or may not be, ala "Recovery 2" etc... Come'on!
Who/what is sampled matter to a certain extent, but what is most important is the quality and creativity of the configuration/modification of the sample, and how it's applied to the song.
We don't know what song, or what part of song X is sampled. For example, The 45 King sampled the first verse of Dido's "Thank You" on "Stan", not the chorus.
So, let's wait and see.