The ratings crashed:http://www.realitytvworld.com/index/articles/story.php?s=1633
(see end)
The show was canceled:
http://www.realitytvworld.com/index/articles/story.php?s=1647
The single and CD flopped, at least in the US:
http://www.realitytvworld.com/index/articles/story.php?s=1799
Nevertheless, Simon Fuller hasn't given up on the American Juniors. If you look at the Jive/Zomba website, they're still listed -- which means that the label hasn't dropped them -- even though there haven't been any postings to the site for months:
http://www.americanjuniorsmusic.com/
My guess would be that Simon Fuller will try again with the group this summer, then give up on them if it doesn't click. However, I wouldn't be surprised if we saw a second season of American Juniors -- except this time, not to form a band but to build individual stars (at least, that's the rumor, which has not been confirmed).