Add some notes about 1.2 things, just to make it more obvious.

docsite/latest/rst/playbooks.rst

@@ -446,6 +446,8 @@ inside another.
 Roles
 `````
 
+.. versionadded: 1.2
+
 Now that you have learned about vars_files, tasks, and handlers, what is the best way to organize your playbooks?
 The short answer is to use roles!  Roles are automatic ways of automatically loading certain vars_files, tasks, and
 handlers based on a known file structure.  Grouping content by roles also allows easy sharing of roles with other users.

docsite/latest/rst/playbooks2.rst

@@ -261,6 +261,10 @@ Example::
 Conditional Execution
 `````````````````````
 
+(Note: this section covers 1.2 conditionals, if you are using a previous version, select
+the previous version of the documentation.  Those conditional forms continue to be operational
+in 1.2, although the new mechanisms are cleaner.)
+
 Sometimes you will want to skip a particular step on a particular host.  This could be something
 as simple as not installing a certain package if the operating system is a particular version,
 or it could be something like performing some cleanup steps if a filesystem is getting full.