Microsoft is offering Australian owners of the Lumia 950 & Lumia 950 XL a free Display Dock accessory. The offer is open to anyone who purchased a Lumia 950 or 950 XL from November 10, 2015 to February 29, 2016. Promotional codes can be redeemed through March 31, 2016.
The Microsoft Display Dock allows connection to a keyboard, mouse, and large display, allowing you to use your phone like a PC. This is done through Windows 10 Mobile's new Continuum feature. The dock has three USB ports, a USB-C port and charging connector, along with DisplayPort & HDMI connections.
Valid only on original purchases made from authorised retailers in Australia.
Steps to claim the display dock (thanks to IceCreamBandit)
To start the claim process, go to the "Lumia Offers" app on your device. If through hard resets you've lost the app, this link should be the direct Microsoft Store link to get the app back.
Once in the app, tap Check for Offers or something along those lines and there should be a prompt to accept the T&C to receive Microsoft emails and stuff. Accept and you'll see the Display Dock offer.
Using your Microsoft Account email address (should already be filled in if your phone is signed in), press next and you should receive an email with a code and further instructions.
With your unique promotion code, go to http://microsoftdisplaydock.com.au/ and enter your code. Then enter your personal details (email address must be the same as the Microsoft Account email address on the device where you started the claim) and finish the process and you should receive a Confirmation email.
Great offer. Should put this in the description.