Tuscany Essential Edition features three expansions to Viticulture: the extended board (and 36 wooden stars), structure cards/mats, and special workers (14 meeples instead of the 66 in the original Tuscany, but gameplay is the same). All other expansions in the original Tuscany will go out of print.
Tuscany Essential Edition is recommended for use with Viticulture Essential Edition, but older versions of Viticulture will work fine too.