I was researching F52 and remembered this old thread.
Revel has introduced the replacement for Performa line, called Performa3.
http://www.revelspeakers.com/Products/Details/223The list price is $4500 for the F208 pictured here, which is close to the F52 which had 3 6" woofers. There is also a baby floorstander called F206 with 2 6" woofers for $3k. There will be an F308 model coming in the future which will have three 8" woofers for $6k.
More infoSoundstage previewVideo about the line:
VideoThe new line is making older models available on AudioGon. There is a pair of F52 for local only sale nearby me in Charlotte. Lots of praise on this thread has me considering it. I checked with Revel, there have been no changes to F52 since first released. It uses all iron core inductors, the Performa3 uses a mix with aircores on series coils, steel on shunts (supposedly "not in signal path.") I'd need more amp power.
The new Harmon CEO (installed after Sidney Harmon sold the company a couple years ago) has moved Performa/Performa3 mfg from USA to China and Ultima2 production from USA to Mexico.
That explains the prices cut in half.