The latest update to Management Reporter 2012 is out
Rollup 3 for Management Reporter was just released on November 9, 2012.
There are bug fixes, performance improvements, a web-based report viewer, GP Analytical Accounting improvements, and the data mart option is available for GP.
Here’s the link for download (sorry, it gives a %^&*# “referring link not secure” message, but if you click their “continue” link it’ll take you there).
GP 2010 users, be sure to check out the Microsoft CPM post by April Olson about upgrading to RU3 before installing. There are data mart considerations!