OnePlus keeps doing the rapid fire update thing right after a new phone is launched, it's been the company's MO for a while now, and things are not different for the Nord, even if it is just a mid-ranger.
The phone is now receiving yet another software update. This is OxygenOS 10.5.4 and it's rolling out, incrementally, to the India and Global models, with the EU-specific Nord to follow soon.
The changelog mentions improved launch speed for the Gallery app, an improved display experience (it remains to be seen whether this means the tinting at low brightness has been fixed), better camera quality in video calls, better color accuracy and white balance for low-light selfies, and improved vibrancy and color accuracy of the macro camera.
As usual, it's a staged rollout. It's going to reach a small percentage of users today, with broader availability to follow within a few days if no show-stopping bugs are detected.