After the last major update to CPAN Testers Reports website, the plan had always been to move to a more dynamic site. While a fully fledged dynamic site is still planned, the move is being made gradually with significant updates. As such the last updates have now been made live.
The preferences themselves have been updated and you are now able to filter on Perl verison and operating system, so you can see the reports that are specific for your installation requirements. The preferences are also now tied to the stats and summary graphics, so updating your preferences will also update these tables too.
The latter dynamic update, the summary graphics, now use AJAX to update the quick view of the PASS/FAIL/NA/UNKNOWN reports for the distribution versions or author distributions, depending upon which type of page you are looking at.