Nah, it's still the same protocol: https://www.virtualbox.org/browser/vbox/trunk/src/VBox/Devices/VMMDev/VMMDev.cpp#L1062 https://www.virtualbox.org/browser/vbo

Nah, it's still the same protocol: https://www.virtualbox.org/browser/vbox/trunk/src/VBox/Devices/VMMDev/VMMDev.cpp#L1062 https://www.virtualbox.org/browser/vbox/trunk/src/VBox/Devic... What they dropped is the older Chromium/VMGL-based protocol for 3D acceleration , in favor of VMware's solution (which has at least one working open-source guest-side linux driver); but nothing else (and as far as I can see nothing from that page, so it's not really outdated).