FYI: This is old news posted multiple times in July 2009...
http://www.nasa.gov/mission_pages/hubble/main/jupiter-hubble.html
You're right. It's dated July 2009. However, there was a very recent impact event on Jupiter (June 3, 2010) which at least one *amateur* astronomer captured images of. I don't know if any professional scopes caught it or not as well.
From June ***2010***...
Huge fireball slams into Jupiter, impact caught on video [June 3, 2010]:
http://www.csmonitor.com/Science/2010/0605/Huge-fireball-slams-into-Jupiter-impact-caught-on-video
This is not old news, a new strike just happened.