You won’t be able to run a parallel LCD at the same time as using the DVI/HDMI output from the Overo due to the simple fact, that that they are sharing the same data-interface … I guess this is why you don’t find any boards with both LCD and HDMI. You can have both connected, but only using one at a time, and it requires you to do your own base-board.
One other possibility might be to get a SPI based LCD and leaving the display sub-system free for the DVI/HDMI connection, but again I don’t know of any out of the box solution…
Hope this answer clarified your question?
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