diff -r 52dc576f1759 -r 5164c4ec787b ANNOUNCE --- a/ANNOUNCE Fri Jun 04 16:02:46 2010 +0200 +++ b/ANNOUNCE Fri Jun 04 16:42:26 2010 +0200 @@ -7,8 +7,25 @@ NEWS file in the distribution for more details. Some notable changes are: -* FIXME +* Explicit proof terms for type class reasoning. + +* Authentic syntax for *all* logical entities (type classes, type +constructors, term constants): provides simple and robust +correspondence between formal entities and concrete syntax. + +* HOL: Package for constructing quotient types. +* HOL: Code generation now with simple concept for abstract +datatypes obeying invariants; applications for typical data structures +(e.g. search trees) can be found in the library. + +* HOL: New development of the Reals using Cauchy Sequences. + +* HOL: Reorganization of abstract algebra type class hierarchy. + +* Commands 'types', 'typedecl' and 'typedef' now work within a local theory +context -- without introducing dependencies on parameters or +assumptions. You may get Isabelle2009-2 from the following mirror sites: