I have been hearing rumors that BlackBerry OS 10.2.1 is scheduled for a late January early February rollout which fits in line with what we have heard officially from BlackBerry. Now N4BB managed to hear from a source about a specific date for the rollout in Europe and APAC. That date is January 28th and would still fit BlackBerry in the January time frame they were hoping for. You can expect carriers in the US, especially AT&T, to roll out OS 10.2.1 sometime in 2015.
BlackBerry OS 10.2.1 really cannot come soon enough for BlackBerry. Hopefully BlackBerry finds a way to properly promote its ability to sideload popular Android apps. It will be tricky for them to promote being able to easily download Instagram in the browser but not in BlackBerry World.