Replying to myself but I believe it’s interesting to share.
Came upon this topic this morning from about 6 months ago where a well known Solus and Budgie dev is giving some insight about Budgie 11:
Extracts:
To clarify, Budgie is NOT based on GNOME Shell. Budgie uses gnome-settings-daemon, GTK, and Mutter. It’s written with GTK, C, and Vala, whereas GNOME Shell is written in C, St, and JavaScript. Budgie 11 isn’t going to use any GNOME applications, its settings daemon, or Mutter. May not even use GTK (but rather EFL).
11 might be a totally different beast.
EFL stands for Enlightenment Foundation Libraries.
-So, is Budgie 11 actually going to happen?
-Yes however it is not a priority over other aspects of Solus development.