If ARC has new or significantly updated models to replace the current line up and the there is no or minimal price increase the new/updated line pricing will be easier to sell. If no new/updated components emerge then then the road ahead may prove rather rugged.
I think what you are missing here is that it takes years to develop a new product. Val just arrived and has focused on the Ref 320 amplifiers. In my discussions with him, he believes ARC needs more flagship products. And he talks a lot about significant upgrades across the range. So that appears to be in the works.
But it takes time. Meanwhile, products like the Ref 3SE phono and Ref 6SE line stage are winning awards and rave reviews left and right.