If you have intentions on selling, sell right now at $3.6. The US Federal Reserve meet next week on Dec 15th/16th and there is an 80% probability that they will raise interest rates for the first time since June 2006. It will be a shock if they DONT raise rates. This will have an immediate and direct impact on Hong Kong. Interest rates will go up here by the same % on Dec 17th. This will have a much greater effect on HK property prices than any of the stupid foreigner taxes, stamp duty, and other measures the HK government have been doing over the last 6 years. HK property prices will take a steep dive and you will be begging to get $3.6 from Dec 17th.
The above is my opinion and you would be an idiot to sell just because some stranger on the internet told you to. But I do believe the above. I actually hope I am wrong since I own property here and my interest is seeing it rise and rise forever. However all signs are pointing the other way now. I would sell to if I didn't need somewhere to sleep.