It's still not apparent whether or not the US is going to get the same basic releases that they're getting across the pond Series 6-wise.
Either we're going to get Part 1 and Part 2 sets and then a complete Series set (which is how it's going to be in the UK, they usually get single disc volumes before the full series anyway)... or we're just going to get the complete Series set. Either way, the Complete Series set MIGHT have this disc or it might not.
The only thing that seems suspect to me is that this Blu-ray (and the DVD) has 5.1 surround sound and the individually packaged episodes usually don't... so that's something that leads me to believe NYjane could potentially be correct. *Only time will tell...*