Talk:Warframes Comparison/Release Dates/@comment-209.133.34.2-20161212141647/@comment-7645613-20170114224314

They can prime any frame they want. There is no order except thed players perceived order when the 4 prime frames were in the game "Guys look an order!" and so many players just stuck with that, that DE just went along with this made up order. They decided to show there was no order with valkyr prime.