Mind you, dvdcompare does say the Australian release had combiner wars on the disc but it wasn't listed on the back of the box.
The fact the UK release says over 90 minutes of extra features does at least tell us we have the expanded Target version of the extras disc as opposed to the standard version, which was the one with CW on.
Im watching combiner wars in bluray goodness. Yaaaaaay!
I dont know abiut the uk editions, but the target edition is physically identical to the standard US release packaging and disc appearance. The only mention of CW is on the slipsleeve. Even the new barcode is only a sticker on the outside of the plastic wrap.
So it could be that cw is available on some versions and nobody has noticed.