New Arduino 101 Firmware questions

I just got my new Arduino 101 today, and I see a lot of info on firmware. My question is how do I know what version firmware do I have, and if it is old how do I update it. I am running windows 10 x64. Thank you in advance.

the firmware for the x86 core has not been updated yet, so you are ok.

Instead, the core needed to program the board with custom sketches is now at version 1.0.6 (will be updated to 1.0.7 in next weeks but you will be prompted by the Arduino IDE to download the update when it's available)