I guess WB couldn't close the HP vault for very long, only 8 months later, they are releasing the movies again, ie. presumely same movie edition as before except Year 1 and 2 from the UE that has extended cut. Even the 2nd bonus disc sounds like the same disc used to with Best Buy edition. (Blu-ray used to be hyped having a lot of storage for extra materials. Hollywood has proven it's bad to have too much space on the disc, so the bonus disc is split into 2 Blu-ray discs so that the 2nd bonus disc can be marketed as store exclusive or to be included when multi-dipping.) I wouldn't be surprised if all or almost all the discs are recycled from the existing editions. It's so sad nowadays about "new" editions. Changing the box or artwork seems to be the "new" feature.
Since WB has discontinued the standalone movies and assuming you can't find the old stock from anywhere, is this new set the only one available? If so, it's like WB is saying they gave you the chance to buy each movie individually and since you kept waiting, now if you want it, you must buy the only super expensive set.
Just skip this "new" edition because WB will do another multi-dipping.