Firstly, this set contains both Dalek films: DR. WHO AND THE DALEKS and DALEKS' INVASION EARTH 2150 A.D. Rather than packaging the two separate releases together in a slipcase, Studiocanal has chosen to include each film in a single double-disc Blu-ray case with unique sleeve (as pictured) and matching cardboard O-ring.
Both films have been restored and look lovely. Don't expect 21st-century-looking quality. Colours are vibrant. A nice level of film grain is evident. And the soundtracks for each film are the original mono theatrical versions in PCM format; there is no pseudo 5.1 upmix here.
One of the bigger questions for fans will be whether the original pre-credits section of DALEKS' INVASION EARTH 2150 A.D. is in the correct place. A number of releases and TV broadcasts have shifted it, thus beginning the film with the opening credits, often with an ugly jarring sound edit. I'm pleased to confirm that the pre-credits "smash-and-grab" sequence is in the correct place before the opening titles and the soundtrack is nice and intact.
Oh, and it goes without saying that both films are presented in their original Techniscope format. I haven't done a comparison with the original DVD release, but this set is definitely a worthy upgrade. The Dalekmania documentary is available on the first film's disc, and there are short interviews and restoration featurettes for each film.