I remember hearing a rumor about this. looks like it's true.
Jimmy Neutron ride closing at Universal
ORLANDO -- On April 1, Universal Orlando will close Jimmy Neutronís Nicktoon Blast.They will begin work on an all-new experience based on a new concept.
The new attraction will be one of many things planned for the next couple of years.
Meanwhile, the attraction will re-open for Boy Genius fans for limited periods during the spring and summer before closing permanently on August 18.