2010 trek 2.1 --- anyone own one?

I'm not positive about this, but I believe one difference is that the 2009 has carbon stays, 2010 does not.  However, the 2010 has some component upgrades compared to the 2009.  I don't know the particulars.  Check out this thread for pics and perhaps some specifications:

http://www.beginnertriathlete.com/discussion/forums/thread-view.asp?tid=165329&posts=23&start=1

I just purchased the 2010 Trek 2.1 and have been on a couple of short rides.  I"m new to the sport of biking, but enjoyed the rides.

the differences from my research are the carbon stays (sp?).  The 2009 comes with it, but the 2010 does not.

The other major difference is the components.  The 2009 had Tiagra shifters i think and the 2010 had mostly all 105 components.  The components for the prices is what i ended up with on the 2010 and felt is was worth it.  I'm not sure how much the carbon stays really matter, so it was suggested to me to upgrade components to the 105.

I just got a 2010 2.3.  Like the others said it dropped the carbon stays for 2010 and up graded to all 105 componets.  The wheels are white bondrager race.  I was told that the seat post was carbon, but i scratched it making a height adjustment and it looks like metal under that paint.  I love the ride but what do I know.  It's my first road bike.

The other user is right.  Trek saw a trend that folks looking to get into road bikes at this price point ($1249) were also seeking out higher end components.  So... they ditched the carbon chain and seat stays in favor of a higher end drivetrain.  The only carbon on the 2010 Trek 2.1 is the fork and seat stem, as opposed to the stays which were also carbon in 2009.

The drivetrain is almost entirely 105 in 2010 which, particularly considering the shifters, is a huge upgrade from Tiagra.  The brakes are still Tiagra, and the crank is a 600 series (which I think is still an upgrade from Tiagra).  Other than that it's all 105.

The last difference that  Trek notes in their pitch book (a book they give to dealers so they know which one-liners to throw at you to buy their product) is that the geometry seems to have changed a bit to more closely resemble their race-god Madone series bikes (priced from $2,000 to $10,000).

I hope this helps.  I just bought one of these bikes yesterday, which absolutely can be raced if you want (just be aware that those with all carbon bikes & super high-end components are gonna have a technical advantage).