In the meantime the Eframe has got a new housing and got several software updates. The system is running MorphOS V2.3 now and it works like a charm. I use the device on a daily basis as juke box, picture viewer, webterminal and mailer.
The new housing solved thermal issues of the first version, where the gfx processor and the inverter produced some serious heat that lead to some unstability of the system. But now everything works pretty nice and the system can run for hours and days without any problems.
This project is now rather finished (am working on some software though), and with the retreat of the announced 8610 and 5121 boards I guess the initial idea is no longer to pursue directly.
But the experince and evaluation I yielded with this project will help me with my future plans to develop multimedea display / POI systems.