@timeflying
Go to your express entry account, click on the question mark next to the item "final decision", then you can see the status of your application.
FYI that I received that 4-6 weeks email too, since then, they asked me to redo medical check -> completed and passed on 16Nov2016. On 12Dec2016, my BG changed to in progress. Other than that, my account status is the same with yours.
I have sent email to ask SGVO for status of my account and their reply is the same as the one shown on my express entry account -> my application is at final stage of review by an officer.
No idea still when I can have their final decision.
So frustrating with this waiting with no idea when it comes to an end. Only hold on to the positive thinking that waiting mean hope is still there, better than receiving a refusal letter. Lol