The offical press release has been distributed concerning the 2007 Honda Civic line up:  

Torrance, Calif. 09/01/2006 --

The eighth generation, 2007 Honda Civic features a well-equipped and technologically-advanced Civic Sedan and Civic Coupe lineup highlighted by an environmentally-responsible Civic Hybrid, a dedicated natural-gas powered Civic GX and an ultra-sporty Civic Si Coupe and Sedan.

Nearly identical mechanically to the Civic Si Coupe, the Civic Si Sedan features a high-performance 197-horsepower i-VTEC(R) 4-cylinder engine, 6-speed manual transmission, limited slip differential and a sport suspension. Also of note, a dedicated natural gas-powered version of the Civic debuted mid-year 2006.

see the whole thing here:  http://www.hondanews.com/CatID2010?mid=2006082537314&mime=asc  

what do you guys think of the Si sedan?  i don't particulary like it.  it looks kinda ugly IMO  

I don;t know about this it seems like a good idea but Hopefully honda doesn't get into the same boat as GM were they are making so many vehicles that they over produce and spend all there money.

but any way I like it