Development of FreeCAD 1.0 began after tagging FreeCAD 0.21 on 2 August 2023. During development it was referred to as 0.22dev. FreeCAD 1.0.0 was released on Nov. 19 2024.
The development of 1.0 targets Ubuntu 20.04 LTS as the oldest OS for compiling FreeCAD. The minimum supported infrastructure software versions are therefore the ones of Ubuntu 20.04 LTS:
This version of FreeCAD is compiled requiring the C++17 standard, and all C++17 features are allowed with two exceptions: