Update release announcement a bit

docs/announce/2013.09.md

@@ -26,17 +26,16 @@ Some of the new features added to this release include:
 + candidate argument to bless removed (per spec change)
 + @a.VAR.name and %h.VAR.name implemented
 + The $var.++ and $var.() syntaxes work
-+ tr/// implemented
-+ Sockets on JVM implemented
++ basics of tr/// implemented
 + Sets/Bags/KeySet/KeyBag now up to spec, except for the empty set symbol '∅'
 
 This release also contains a range of bug fixes, improvements to error
 reporting and better failure modes.
 
 Please note that this release of Rakudo Star does not support the JVM
 backend from the Rakudo compiler. While the JVM backend mostly implements
-the same features as the Parrot backend, many small IO bits are still
-missing, rendering some crucial parts like the module installer unusable.
+the same features as the Parrot backend, many bits are still missing,
+most prominently the native call interface.
 We hope to provide a JVM-based Rakudo Star release soon.
 
 The following features have been deprecated or modified from previous