This is straight talk on what it takes to get updated data outside of N. America and Europe.
In one of my other side occupations, I deal with Open Source Intelligence focusing on SE Asia for politico-military affairs. Anything that would normally be “open” in the West is automatically locked down in the region, including standard DEM data and updated overheads.
Many users fail to appreciate or understand these nuances. We had one user demanding that Bing and Google demosaic the blurred out areas of the security buffer zone that extends for several miles stretching into South Korea that meets the NK border because it looked awful from VFR height. Just because everything appears digital in the West or is easily available in open source is definitely not the case elsewhere. Suffice it to say MS-Asobo takes every opportunity to improve the data, but is partly dependent upon regional authority cooperation and Bing Maps team getting access to updated info.
Needless to say, the availability of such info and the timing of release likely informs which regions of the world get updated next or how soon.