NEWS

     datatype_new_compat ~> datatype_compat
     primrec_new ~> primrec
     wrap_free_constructors ~> free_constructors
   INCOMPATIBILITY.
 
-* Old datatype package:
+* Old and new (co)datatype packages:
   * Generated constants "xxx_case" and "xxx_rec" have been renamed "case_xxx"
     and "rec_xxx" (e.g., "prod_case" ~> "case_prod").
     INCOMPATIBILITY.
 
 * The types "'a list" and "'a option", their set and map functions, their
-  relators, and their selectors are now produced using the new BNF-based datatype
-  package.
+  relators, and their selectors are now produced using the new BNF-based
+  datatype package.
   Renamed constants:
     Option.set ~> set_option
     Option.map ~> map_option
     option_rel ~> rel_option
   Renamed theorems:
+    set_def ~> set_rec[abs_def]
     map_def ~> map_rec[abs_def]
     Option.map_def ~> map_option_case[abs_def] (with "case_option" instead of "rec_option")
     list_all2_def ~> list_all2_iff
+    set.simps ~> set_simps (or the slightly different "list.set")
     map.simps ~> list.map
     hd.simps ~> list.sel(1)
     tl.simps ~> list.sel(2-3)
     the.simps ~> option.sel
   INCOMPATIBILITY.