How many recipes are in a Plan and how often do the recipes update

How many recipes are in a Plan and how often do the recipes update?

Every month 
-40 recipes will be available to choose from. 
-20 new recipes will be added and 20 old recipes will drop off

Cold Lunch addon or stand alone

-16 recipes will be available to choose from. 
-8 new recipes will be added and 8 old recipes will drop off

A constant monthly rotation will keep the recipes fresh while keeping you from being overwhelmed by too many recipes to choose from.