Added more description to the "What's new" section.

RELEASE

@@ -147,11 +147,26 @@ We even have one of those URL things:
   good thing is that immutable parts of the image can be shared
   between processes. see the script scsh/static.scm
 
+** Last few bits of Posix
+    Scheme bindings for isatty(), ttyname(), ctermid(), and fcntl().
+
+** Regular expression compilation
+    - MAKE-REGEXP now actually does something useful.
+    - AWK has been modified to use it, precompiling all of its
+      patterns outside the main loop.
+    - Unfortunately, things are still pretty slow. We'll work on it.
+
+** New meta-arg second-line syntax
+    Simpler grammar.
+
+** New -s<fdes> command line switch
+    Scripts can be read from stdin or other open file descriptors.
+
 ** Etc.
   Solaris 2 on i386 support, AIX 4 support, HP-UX now uses dld for
   faster loading, a few small networking bug fixs, better error
-  reporting, bug fixes, ...
-
+  reporting, bug fixes, more efficient handling of closing unrevealed
+  file descriptors at exec() with CLOEXEC, ...
 
 
 * Thanks