Although the BlackBerry Q5 hasn't really been slated for arrival in the US, in most cases devices that operate on US compatible networks still appear there from time-to-time because they need approval for roaming agreements and that looks to be what is happening here.

Appearing with support for AT&T's 3G network, the device labeled as L6ARFS120LW is sitting at the FCC alongside all the relevant confidentiality letters and such. Other than the obvious, not much else info can be pulled from the data except that it was tested using OS and OS Yes, you read that right. And no, it's not a typo. Someone at BlackBerry was being silly.

Read more at the FCC