That's correct, the Tuscany board is double sided. The graphics on the board haven't changed at all; the only difference is that the Tuscany EE board is matte while the original board was glossy.
Thanks Jamey for the confirmation. It was misleading as every pictures of the board in the TEE rules show the non-property cards side. Yo may want to just add the other side of the extended board on your website to prevent other people like me asking.
And thank you very much for this great game. My wife and I really enjoy it and I can't wait to receive my pre-ordered copy of TEE!