Well, the Google Maps API for Flash has been officially deprecated as of September 2, 2011. Bummer. I had hoped for an update to deal with better touch support and start up times. Although there are some alternatives out there (ESRI and Mapquest), so you still have solutions. FYI: Yahoo also recently discontinued their mapping solution for ActionScript as well.
I guess for desktop solutions, I will be mixing in HTML elements into my apps. For mobile, I will still use the StageWebView solution(until we get a Native Extension that will access the device’s native map solution). Update: Lee Brimelow from Adobe just posted a video demonstrating a Mapping Native Extension.