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No /dev/fb0 find, run new demo images on beaglebone

I download an new img.gz or img.xz file from  Original, BeagleBoard.org mirror and Amazon S3 mirror,

For example: Angstrom-Cloud9-IDE-GNOME-eglibc-ipk-v2012.05-beaglebone-2012.04.22.img.xz, Angstrom-Cloud9-IDE-GNOME-eglibc-ipk-v2012.05-beaglebone-2012.05.09.img.x, etc.

These new  demo images can run  on beaglebone, but I can't find  /dev/fb0 on the beaglebone.

But I run old   demo images on the beaglebone (For example:  Angstrom-Cloud9-IDE-eglibc-ipk-v2011.11-core-beaglebone-2011.11.04.img.gz,  Angstrom-Cloud9-IDE-eglibc-ipk-v2011.11-core-beaglebone-2011.11.05.img.gz, etc),   I find the  /dev/fb0.

 Is there some trick here?