Hello Béla,
Thank you for all you've done to kick-off BBB version.
It's sad to know there wasn't interest in this great board.
I'm a big fan of BBB and would like to update TCL if I can.
My initial guess is that most TCL packages are common to other ARM boards so it would be necessary to update your current selection of packages with the newer ones available.
Also, u-boot and kernel could be updated with more current ones.
Am I being too simplistic?
TIA,
Juan