This is the oldest thing in any industry. When tube-TV died they made the fanciest tube-TVs you had ever seen, so you would once more buy into the old technology just so you could buy your flatscreen one year later…
The whole point of this is to make it seem viable at least a bit, then they will have some highlisters endorse them, expect some cool vidoes of the likes of Tiesto, Ghetta, van Buren, … have them on stage while performing a pre-recorded mix.
This way a lot of people will think it is still relevant and “pro DJs use it”. -> Sales.
A few clubs that still have Pioneer sales people directly at their doorstep will fall for it and upgrade their gear, as those sales people know not to ask the club technician, but go to the manager directly who has no clue and thinks he needs it.
So will this sell -> Yes it will. You can milk this cow for at least another 5 years is my guess and it makes perfect business sense for them to do it.
Am I tempted? -> Not one bit. It is still a very limiting piece of hardware for an astronomic price point.