The "World of Color" update; recently released in beta/stable stages. In Development/Speculative

The jump from 1.12 to 1.16 involves significant technical hurdles that the Eaglercraft development community is still working to overcome:

While "1.16 Eaglercraft Full" is a highly searched keyword among browser-gaming enthusiasts, there is currently of Eaglercraft based on Minecraft version 1.16. The project, originally created by developer LAX1Dude , has officially peaked at versions 1.8.8 and 1.12.2.

The community's strong interest in 1.16 stems from its major "Nether Update" features, which many hope will eventually be ported to the web browser through Eaglercraft's unique technology. Current State of Eaglercraft Versions