The zone map appears when the game is paused. Each zone will have its own map. For now, the only map is The Lab since that's the only area I've built.
In the next release, the room you're in will flash on the map to help with navigation.
Here's a better look at the map. The player starts in the top left in Workshop Alpha.
I've also updated the date of the next release in the first Patreon Terminal. He'll receive an update with every release, so don't forget to say hi!