Apparently the Metro PCS 521 got cyan rolling out today, although my phone update thing hasn't shown the new update yet. While I wait, are they any risks from going to 8.1 from the 8.1 preview?
Went from the problematic DP8.1/GDR. (whatever) here to Cyan on a 521 and a 925 from T-mobile and have been oh-so-happy!
I'm so glad to be off the developer preview...