Gallium R300 as drop-in replacement
And what does that mean? It basically means that the classic r300 driver and the gallium based one share the same filename. So you can switch between the two drivers by simply replacing the one with the other.
This is really helpful for developers. And it might also be the first sign that the gallium based driver might become the default driver for r300.
From an anonymous comment:
It also means that you cannot easily package both drivers in rpm packages.