Yes. My understanding is that the new Mezzo will have the same tweeter as the Alexia.
Barry - these speakers are amazing! If you're considering them, I think you would be very happy. My first Wilson "experience" has been terrific. Wilson obviously has the whole experience down to a tee. It's the little things that have impressed me. Things like high quality metal binding posts with the Wilson logo on them and a divider in between the positive and negative as a simple, yet, affective precautionary measure.
From the impeccable packing (wooden crates that are padded inside) to the well written instructions to the care taken for the protection of the final product with the use of a layer of film all over the speaker, I am thoroughly impressed.
As for the sound? I don't want to jump the gun as its early in the break in period and I don't have my new amps yet and my speaker cables are new too....but initial impressions are very positive. I'm a happy camper.