[ashok09]

Tweet from Blackberry (@UKBlackberry)
@UKBlackberry: Blackberry 10.3.1 update to start rolling out for the Blackberry Passport next month https://t.co/G7eygYM0Um (Google News)

Blackberry 10.3.1 update to start rolling out for the Blackberry Passport next month

Posted via CB10

[Ecm]

Take a look at the first part of this article:
From the Editor's Desk: Classic, 10.3.1, CES, MWC and more! | CrackBerry.com
February is the earliest we can expect the official roll-out, based on current official info. (Although there is a January 27th rumour floating about.)
As we have too many threads discussing this already, thread closed.