According to Jewish tradition, the next Shmitta Year is 5768 (Sept 2007-Sept
2008). Many Christians are under the presumption that Jews 'lost count' of
the 7th year, mostly because they haven't heard any Jews talk about when it
is, so they assume that if they haven't heard it, then it must not exist.
But in reality ,  they DO believe they know when it is and tha they have
been counting it every seven eyars just like they've been counting the 7th
day every week.

Shalom, Joe