Existing designs need not be changed. The default pull-up/pull-down behaviour during processor reset has changed. This is only an issue, when a design relies on a specific pull-behaviour.
A modified USB-Host-driver is needed, because of an processor-issue. This might require a new operating-system image.
A new speed-grade of 624MHz is availlable for Trizeps4M.
An option was added, to route the AC97-signals to the SODIMM-socket, if the Audio-Codec is not mounted on the Trizeps-module.