Yes, I saw on Gizmodo, you can't change the ringtones. And it
sucks. 
Bluetooth is only for calling. Here is a list :
It can't transfer files to a PC, or appear on a desktop for
drag-and-drop file juggling.
It can't send a photo to a Bluetooth printer.
It can't stream audio via Bluetooth to a compatible speaker
system or headset. (Video is out of the question.)