We’ve just been through this subject recently. Before we have another round of digressions, Mazda is currently showing an updated Wankel called the RENESIS in a concept car called the RX-EVOLV. According to Edmunds, they are scheduled to release a next generation RX-7 based on the concept in 2002.
Mazda has not sold the RX-7 in the US for some years, but has continued to produce it for sale in Japan. In 1999, they produced a bit over 4000 of them:
http://www.monito.com/wankel has tons of detail about rotary engines. One major upside of a rotary is that it’s lightweight. The Moller sky car and possibly some helicopyrtd use rotary engines.