It has a display and even bluetooth. The Firmware is open source. The schematics are available.
Imo open source is not that important for an iron unless you want to add a klingon translation. But the iron is pretty good, although it is often rather >50 bucks including shipping.
It has some fancy features to allow for custom heating presets among other things. Also, it means you can easily repair/modify the hardware for whatever reason you might come up with.