Nope, they're still requiring the "or at your choice a later version" part of the GPLv3 that they're using. This would allow them to start a switch over to GPL

Nope, they're still requiring the "or at your choice a later version" part of the GPLv3 that they're using. This would allow them to start a switch over to GPLv4 by changing the parts that they do control and effectively making the whole project GPLv4 regardless. That does mean that the pieces that they don't control could still be used separately from the project as GPLv3 but that's almost certainly not a big issue. edit: direct statement of this from the mailing list discussion, https://gcc.gnu.org/pipermail/gcc/2021-June/236194.html https://gcc.gnu.org/pipermail/gcc/2021-June/236194.html