Updates from Christopher Craig.

pep-0240.txt

@@ -41,16 +41,17 @@ Backwards Compatibility
     The only backwards compatible issue is the type of literals
     mentioned above.  The following migration is suggested:
 
-    1. "from __future__ import rational_literals" will cause all such
-       literals to be treated as rational numbers.
+    1. The next Python after approval will allow 
+       "from __future__ import rational_literals" 
+       to cause all such literals to be treated as rational numbers.
 
-    2. Python 2.2 will have a warning, turned off by default, about
+    2. Python 3.0 will have a warning, turned on by default, about
        such literals in the absence of a __future__ statement.  The
        warning message will contain information about the __future__
        statement, and indicate that to get floating point literals,
        they should be suffixed with "e0".
 
-    3. Python 2.3 will have the warning turned on by default.  This
+    3. Python 3.1 will have the warning turned off by default.  This
        warning will stay in place for 24 months, at which time the
        literals will be rationals and the warning will be removed.
 
@@ -61,6 +62,12 @@ Common Objections
     (Relax, I'm not taking floats away, I'm just adding two more characters.
     1e0 will still be a float)
 
+    Rationals must present themselves as a decimal float or they will be
+    horrible for users expecting decimals (i.e. str(.5) should return '.5' and
+    not '1/2').  This means that many rationals must be truncated at some 
+    point, which gives us a new loss of precision.
+    
+
 
 References