Gavinmc42 wrote:There is so much graphics capability that it would be hard to do it justice anyway.
That's not really what we meant by major change, the Pi 4 doesn't contain any revolutionary graphics capabilities (most PC graphics cards could walk all over it), the change is that the driver for the 3D graphics (OpenGL/GLES) on the VC6 is now in Linux and not in the firmware. That is apparently a good thing for Linux (except that the new driver is slower) but it is a lot less of a good thing for everyone else.
The interesting thing is how much of the firmware support still exists, it appears that DispmanX, Camera, OpenMax, MMAL and some other bits are still (largely) available, the Pi 4 uses the much talked about but very seldom understood FKMS Linux driver which is a bit of a "Frankenstein" of parts from all over the place.
Gavinmc42 wrote:If you get a working framebuffer, can we get another for the second HDMI?
As far as we understand the multiple framebuffer support works on all Pi models now and allows many combinations including both HDMI ports on the Pi 4.