The Arduino IDE support was announced on the ESP8266 community forum. Setup is fairly simple with downloads for Linux, OS X, and Windows. This isn’t an ESP8266 shield, either: you can write code ...

DocumentsArduino on Windows ... In both Arduino IDE 1 and 2, the Manage Libraries... option is also available in the Tools ...

He’s included the GNU/AVR toolchains, though notes that testing so far has been limited to Mac OS, and he’s interested in feedback from Windows ... the IDE supports using the Arduino as ...