The first new thing everyone will notice about the Prospect Tracker is that the "Submit" button is gone. That's because, when you make a new selection on the pulldown menus, the tracker now jumps to the desired page automatically.
Prospect Tracker has also undergone some improvements in functionality. The most substantial of these is that subscribers with Team Tracker teams can now review them using the same stats output, making monitoring all those minor leaguers in super-deep leagues quick and easy!
To see your team tracker teams, you must have an active Baseball Prospectus session (read: you logged in at the BP page and allowed it to set your cookie). With this taken care of, you'll now see your team tracker teams in the lists of available teams (along with the Astros, Angels, etc.). For example:
But that wasn't the only big change. You can now see any combination of "ranking year" and "stats year" for the various Prospect Tracker pages! For example, do you wonder how the vaunted, no.1 Athletics prospect class of 2009 is doing in 2013? Simply select 2009 (and wait for the page to reload), and then "2013 Stats" (if it's not already selected), and you'll see:
Enjoy the changes. More suggestions are always welcome!