Collector edition it might beZavvi has listed that the 3 discs are 4K, Blu-ray and DVD. Odd since the images show 2 Blu-ray discs and a 4K disc.
Curious about the 3rd disc since the SteelBook only contains 2 discs. Also I personally find it odd that the price of this CE is the same price as the True Romance CE but True Romance had a SteelBook when this doesn't.
Collector edition it might be
Amazon posted the mockup image first Zavvi and HMV just copied it
It's likely meant to show UHD/Blu-ray/DVD discs and not UHD and 2 Blu-ray discs
Disc with Artwork TBC is likely the DVD
As the Steelbook is only 2 discs then the third disc in collector's edition must be a DVD
If the extras was on a separate Blu-ray and Film on seperate Blu-ray then Steelbook would have to be 3 Discs
The info on Amazon/Zavvi/HMV websites mention includes DVD