As there is currently no open arrangers made, Diki’s comments are moot.

Wersi are not hugely expensive as they cost no more (And in many cases cost less) then other manufactures equivalent products, so don’t know why this was bought up. (Also all Wersi updates have always (And continue to be) free)

Consider This
Assume for a moment that the T4 was based on PC software/hardware, now as all the new features on the T5 are just software upgrades, they could have easily have been downloaded into a T4 (For a cost) to make it into a T5, but at a fraction of the cost it takes to trade in a T4 and buy a new T5. (That is the advantage of a computer based software arranger)
NOTE: The above also applies to all the big boys.

Happy (Lighter Wallet) playing

Bill