Study: What is BB OS version of your Z10? ( results will presented as chart next friday)

This study is going to presents data showing how quickly users are updating to new versions of BB 10 OS.
I am going to research about the version of BB z10's OS .. results will presented as chart in separate Forums next Friday..

For convenience analyzing, please just write down the OS version such as "10.x.xxxx" and don't discuss about subject here.