what’s the sales pitch? i.e. why should we make the switch?

I’d be interested in hearing why you’re making the switch to.

I’ve used CVS extensively from a personal document/dotfile/etc management angle, which I think it’s fine for (because it’s simple and is usually installed on just about every machine on the planet, or easily acquirable).

But I am doing more and more development management (don’t ask me how i got involved in that) and i’m wondering if subversion or something else might be a better solution, but we’re using CVS for now..

rms doesn’t talk to Linus anymore because Linus moved Linux to bitkeeper, which is not free software.

I’ve always wondered: why not improve CVS?

With subversion you can rename, move or copy files without breaking the history of the file.
With subversion, commits are atomic.
That was enough for me to move to subversion.
The other reasons are enumerated here :
http://subversion.tigris.org/

I’ve also been thinking about subversion. I played with it a little yesterday and my only complaint is that it is really slow for commits, checkouts, updates, etc.