I owned Olympica 3’s for a number of years. The 1, 2 and 3 designations are: stand mounted, floor standers with one woofer, and floor standers with two woofers. They are all great sounding… subject to exactly what you would think.
The newer version of the Olympics line is Olympica Nova 1, 2, and 3. Same form factors.
All are great speakers that focus on natural musical sound. The older and newer are much more similar than different. While I have heard the Nova quite a bit… to me they sounded like Olymicas… I was not trying to critically assess them. I am sure they sound a bit better than the previous version… but of the same character. If I had a choice I would buy the new Olympica Nova 3 as it fits your space… meaning the two subwoofers would be appropriate for the size of your room. If I already had Olyimicas I would d detailed comparisons to decide if trading up would be worth it.
Btw, I traded my Olympicas for Sonus Faber Amati Traditional… a great upgrade.. but of course at twice the price.
I highly recommend them. I will not be brand switching.