Firstly, I wanted to comment that the Pi zero W addresses probably one of the biggest things people have been requesting of the Pi Zero. Well done to the Foundation!
One of the challenges is that for someone setting up a headless Pi with a WiFi interface is that it can be challenging to set up the SSID of your WiFi network for your first boot.
To get ssh working, you can put a file called "ssh" on the FAT partition of the microSD card.
At the moment, to set up WiFi you either need a keyboard and display, console cable or the ability to set up your SSID, password and WiFi country (I am in Australia and I use channel 13, because very few other people are aware that you can use it). To set up WiFi, currently you need to put the microSd card into a Linux system and mount the ext4 filesystem.
What would potentially be useful is the ability to create a file on the SD card with the WiFi parameters so that they can be copied into /etc/wpa_supplicant/wpa_supplicant.conf. That would make it easier to do this configuration on a Mac or a Windows PC.