Noticed tonight flying from Madrid to Heathrow that some updates must be getting done as we speak. I flew from Madrid  to Heathrow with a A320N, and the route took me over the Bay of Biscay at 39k, and i noticed the wind was increasing at first a 20-30 kt head wind, then increasing to 45 -57 kts with a fair bit of turbulance.Until now that would have just sat at around 3kts where ever you were, so good to see MS and Asobo must really be putting the work in at the moment.

Anything that is part of an online service, like the scenery, live weather and live traffic, can indeed be worked on behind the scenes without an update required to the simulator. There was a bug with an obscenely tall building at launch that was fixed swiftly.