Yes. It has. Dragonriding is unlocked with DF content. At level 60.
Did you honestly think a level 1 was going to be able to dragonride??
Every single form of travel is unlocked at certain levels. Ground travel is unlocked at 10. Faster ground travel is unlocked at 20. Flight is unlocked at 30. Faster flight is unlocked at 40. Dragonriding is unlocked at 60.
You can’t fly on a level 10 character. You can’t dragonride on a level 20 character. Let’s use some logic here.