I was wondering if there are Mavic Airs out there that have a production date later than January 2018, which seems to be the initial batch of units produced in the months before the initial release? Has anyone received one from February or even March 2018 yet?
Check by s/n: http://tools.retroroms.info/

The reason I'm asking is that I have seen photo blurryness/softness issues in several threads, samples and also in my own experience with 2 Air units (compared with Spark and MP).  I'm now wondering if this could be related to issues with the first batch.

Hey there, the warranty period for a product starts on the day such product is delivered, unless otherwise agreed upon between you and DJI. We're sorry that the production date is not available. If you have the similar issue, please be more specific about it, we'd like to help.