Apparently this was an error on EA's part. Considering their past actions, I was expecting it to be true.
http://news.cnet.com/8301-1023_3-57426660-93/ea-not-killing-rock-band-for-ios-after-all
Something tells me that they will just pull the plug without any further warning to us. I guess we will just have to see what happens after May 31.