It's the version I got on Steam, and from my understanding the Black Edition was the way for Epic to "rename" UT3 to signify the arrival of their 2.0 patch, which also makes a reference to the Titan Pack. If you had the retail version you would eventually get all of that with separate downloads and installs, there's no retail Black Edition, I think, if I'm not mistaken it's only on Steam and D2D, but if there's one retail then it's just UT3 packed with the Titan Pack and already patched to 2.0 (since 2.0 is required for the Titan Pack).