Unfortunately, it is a 100k, 8 year warranty. The 8 year part got me. Being a 2004 car..
From mazdausa.com
"RX-8 Rotary Engine Core Limited Warranty Extension
Mazda Motor Corporation is extending the warranty coverage on Rotary Engine Core Components on all RX-8 vehicles produced after the 2004 model year. The warranty coverage for the Rotary Engine Core Components is extended to 8 years (96 months) from the original warranty start date, with a 100,000 mileage limitation. The following is a list of components covered by this warranty:"