It could be that this is a marketing decision and not just a technically necessary one.
Offering an upgrade for the 861v2/v3/v4 will impact sales of the 861v6.
I understand, but i already payed 22.5K guilders (10K euro) for the unit years back.
Than the upgrades were like 2700 Euro for V2 - V3 and 700 Euro V3 - V4
Next to that 2x 850 Euro for OA13 cards, and 1100 Euro for a IA45
Total costs over the years 16200 Euro.
Normally the price for the upgrades was about the same as the increase to a new unit. That was always very good i think, i never had the idea i payed too much for upgrading. Also 2nd hand prices stayed ok.
If i would get a fully loaded modell back for the price difference between what i payed now and the new price, it would be like it always was and i would be a happy person.
But if i cannot keep using my current OA13 for the subwoofer only, the IA45 for 5.1 channel input it would simply cost me like 2200 euro more to upgrade things i already have and are happy with.
The new price does not seem to bad, 11.500 pound (around 13500 Euro)
If it contains a OE14, IE44 and IA04 by default.
Add OA18 for 1000 perhaps and the new modell would be cheaper than my old upgraded unit..
Well lets wait.
I did not even use the OE12 / AC11 and the DSP speakers yet..