I borrowed a Wandla the weekend before last, from a local dealer. I thought it was a good upgrade on my OG Hugo, into my Leben CS600 (via tape loop input to avoid input switch) and Goldenear Triton 1 system. I also found the separation of instruments amazing including individual drums during rolls etc. So good I didn't bother listening with headphones.
I want the new version with the voltage selector, not so fussed about the software changes. My dealer has a number of the older version on hand. We both have to play the waiting game to see what makes it to Australia and when. His distributor wasn't even aware of this updated version coming out. Maybe Ferrum should have been on the front foot a bit more with their distributors.
If it wasn't for this thread, I wouldn't have known there was changes coming when I borrowed the Wandla. Luckily I did, so I told the dealer I would be waiting to see what the changes were, before purchase, assuming I liked it. Luckily I really do like it. I just don't know how long I have to wait for the board revision 4.0 to become available. Which is a bit frustrating. I'm sure my dealer is frustrated as well given he has the OG version on hand to sell.