If you've ever found yourself lost in Singapore or Hong Kong, then I'm sorry. I hear that if you run into the wrong part of town things can get... bad. It's a shame you didn't have Google Navigation to save you the trouble of ending up somewhere you shouldn't be. The good news, though: future wanderers won't have to suffer your potential strife, because Google Nav should now be available in the aforementioned places.
Feel free to roam freely throughout Asia now, like the uncaged bird you are. If you're ever lost, simply turn to your mobile for an answer. It will tell you exactly where to go.
Update: And just like that, Google took Singapore and Hong Kong off the list again. Hopefully, this means the official announcement is not far behind - that's exactly what happened last time.
Update 11/13/12: Both Singapore and Hong Kong are back on the list.