We have Docs for 2.x firmware and 3.x firmware, available for different models below. All models will migrate to firmware 3.x.
There are 3.x testing firmware for GL-AR150, GL-AR300M, GL-MT300A, GL-MT300N, GL-MiFi, please access Firmware Releases
The web admin panel of 3.x firmware looks like:
The web admin panel of 2.x firmware looks like: