Who knows how frequently updates from OSM are pulled?
What items beyond buildings are part of the import and how do they get merged?
Who knows how frequently updates from OSM are pulled?
Interesting question and much more interesting would be the answer.
What items beyond buildings are part of the import …?
As far as I know, water bodies (lakes, reservoir and basins), the road and railway network.
+1
I did so many OSM edits over the years in attempts to fix wrongly rendered autogen buildings (mainly wrong levels/height and type) and AFAICT nothing ever improved in the sim 
It would be great of this question could be brought up at the next Dev Update if it remains unanswered.
If I am interpreting the debug tile correctly, the sim is loading a Vector Data file belonging to the “2024_10_30_v6” dataset.
The file path (vector_data/2024_10_30_v6/…) suggests that at least some of the OSM data was updated in late October 2024.
That said, it should be noted that there has been no official communication from Microsoft/Asobo regarding the frequency of OSM updates or the scope of each batch.
Therefore, it is correct to view this merely as a technical clue rather than formal confirmation.
In short: yes, it appears the sim is using OSM data updated as of October 30, 2024 (v6).
Based on some tests I ran on various tiles across the five continents, the “2024_10_30_v6” Vector Data dataset is indeed present globally.
