Apple has launched a refreshed 2016 12 inch macbook line up. You won’t be able to buy the 2015 macbook direct from apple any more, and if you are buying from third-party retailers, make sure you are getting the latest edition or at least getting a nice discount on a 2015 model.
Apple is the first to adopt the usb c standard , a new usb design thats much smaller and reversible very similar in some respects , to apples lightining connector, while a three-way adapter that includes an hdmi out , anormal usb port and a power connection is an expensive extra.