In a statement sent to CNET, EA have confirmed that Rock Band for iOS will live on in spite of previous reports.
"Rock Band for iOS will remain live - the in-app message users received yesterday was sent in error," the company said in a statement. "We apologize for the confusion this caused. We're working to clarify the issue that caused the error and will share additional information as soon as possible."
Maybe, EA rethought their decision upon seeing the reactions it caused?