Personal comment:
Based on my informal transcription of the last Dev Q&A, jump to around 32:00 where Martial is detailing the other teams who work on scenery and world updates, as a supplement to Jorg answering the resourcing question of who works on the Sim Core versus other features.
Martial mentions QA and Engine teams checking for corrections - such as color tints - as new aerials from Bing Maps team becomes available. Implication - Bing Maps team is outside the MS-Asobo core team, so they are an authoritative and sole-source for any streaming map updates - which will happen at their schedule, not the Flight Simulator team.