It is true, assuming Villa lose their next match, the next point Norwich gets will relegate them. Also if they lose their next match they will have to win all of their remaining games to reach Norwich's current points total.
Simply put, if Bournemouth take all 3 points at Seal Park and Norwich avoid defeat at Selhurst Park, Aston Villa will be relegated from the Premier League before we even kick-off and 500 or so Albion fans will be party central at The Etihad next Saturday evening.