The OnePlus team definitely took its time with updating the OnePlus X to OxygenOS 2.2.0, but today, well over a month after its sibling, the OnePlus 2 received it, the rollout has finally started.
Granted, the two models do have a pretty distinct and different set of problems to address and the OnePlus X did, already receive a 2.1.3x hot patch for a lot of its aches a while back. Still, it is nice to see that the OEM is actively supporting its products.