Yes, but it's just Super Star beefed up. The new modes are a speed run mode with Meta Knight culminating in a Uber Boss, the original Kirby's Dreamland's long since forgotten hard mode with a dash of self parody, the arena for helpers, and the ULTIMATE boss rush. We can debate this as much as we want, but the point is Ultra is pretty much the equivalent of Kingdom Hearts Final Mix. Bigger, Better, and Greater, but not 100% new. Nothing wrong about remakes of course.
With more stuff. FM added new abilities and rewards for beating bonus bosses, Fire Emblem 12(remake of Marth's second adventure not included in the Shadow Dragon remake) introduced the first custom unit which would become the MyUnit in FE13. Final Fantasy 1 got bonus dungeons and bosses against Gilgamesh, Kaizer Dragon, etc. Fire Red and Leaf Green had future generation pokemon and worked 100% as intended while HG and SS just added all sorts of goodies. MegaMan Powered Up let you play the robot masters including Oil and Time man. So on and on and on.