key llGetRegionWorldMapTile(string region_name)
A LSL function to return the UUID of the current world map tile for a named region, so that it might be placed on a face using PRIM_TEXTURE.
This could also be added to llRequestSimulatorData
Currently the only ways I know to accomplish this depend on MOAP and voodoo to get an image from slurl.com, or pulling the CDN UUID from gridsurvey.com via a HTTPRequest.
Which all seems pretty hacky and unfun.