The Mets website and Newsday have some new pictures of City Field construction from a tour given to the press today.  According to Jeff Wilpon, the foundation is complete and the steel construction has begun.  Most noticeably is two elevator shafts and the steel skeleton of a section of the right field stands. Newsday's site also has a video of the construction progress.

Update - The Daily News and the Post report that the Mets will have a web cam up and running next week so that we can see the stadium progress--very cool.