The GNOME DVCS survey

My suspicion is that if GNOME is like most other large (and particularly Free Software) projects, it's already using Git. Developers who like Git will take arbitrary source code or other data and suck it into Git because it makes their life easier. So formally moving the project to Git would just mean putting the rubber stamp on the paperwork (and saving a lot of people huge swathes of disk space).

Of course moving the /whole project/ is a good deal (and probably months of work) different from a few individual developers choosing to use Git. But unlike with earlier non-distributed version control systems the DVCS revolution is itself distributed. If GNOME makes no decision the number of people using Git to contribute will climb anyway.