Does anyone know if you can have more than one dragon mount? Like having a shout to call a default brown dragon and another to call a legendary dragon, or a frost dragon. If you're only allowed one dragon mount, can you change the mount you have from a crappy one to a better one you find, and if not can we "upgrade" the dragon, like putting armor on it or teaching it shouts that you know and it doesn't?
What do you guys think?

Don't know, but I'm assuming that it's not so much like purchasing a horse. No, I'm sure it'll be a shout of some sort. Either you can just shout and a random dragon or any kind will come by and pick you up OR it's a shout that will turn a hostile Dragon friendly and rideable.

I don't want this to be "Pimp my Dragon"

Lol nice pc!

My thoughts are you'll probably have three different mounts available, which you will have to fight first before they'll allow you to ride them. After that you may have 3 individual shouts to call them to you.

I want spinners, hydrolics, and a bangin' speaker system. And some neon lights to go on the under carriage.

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I think it's only going to be some dragon you meet during the questline, and/or Odahviing, maybe Durnehviir too?

"Yo dawg, I heard you like dragons. So we put a dragon in your dragon so you can spit fire while you spit fire"
-Bethesda

You'll be able to Customize your dragon by visiting an NPC in Solstheim by the name of Xzibit.

Hopefully it is a one time thing for a quest and then after that you can't do it again....ever

Nah, he'll be a Khajiit called Exz'bit.

Actually, that would be awesome.