Yahoo movies; larger version at the official site
Ok the Enterprise and the CGI look great... but is that enough?
Some have complained that the construction is taking place on earth, in violation of established Star Trek canon; others may be put off by the use of retro construction tools (which make it look like a 20th century ship construction yard). But like I've said in the other post... the teaser may have nothing to do with the movie. So we may not see this scene in the finished product, etc.
Edit: See this thread at TrekMovie.
See this reimagining of the Enterprise by Gabe Koerner:
And from this thread, a link to this website for fanboys who want to watch webcams monitoring construction.