Update 'NEWS' for 0.6.

NEWS

@@ -2,7 +2,7 @@
 #+TITLE: Guix NEWS – history of user-visible changes
 #+STARTUP: content hidestars
 
-Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
+Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
 
   Copying and distribution of this file, with or without modification,
   are permitted in any medium without royalty provided the copyright
@@ -10,6 +10,53 @@ Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
 
 Please send Guix bug reports to bug-guix@gnu.org.
 
+* Changes in 0.6 (since 0.5)
+** Package management
+*** Default store directory changed to /gnu/store
+
+Although it is still possible to configure Guix to use the old store
+directory, we recommend that you start with a fresh install to /gnu/store.
+
+*** Substitutes from hydra.gnu.org must now be signed and authorized
+*** Support for offloading builds to other Guix machines over SSH
+*** New ‘guix archive’ command
+*** New ‘guix system’ command; it can currently build VM images
+*** ‘guix package’ accepts several arguments after -i, -r, and -u
+*** Updating a profile with ‘guix package’ is now noticeably faster
+*** ‘guix build’ can override a package’s source with the new ‘--with-source’
+*** ‘guix build’ has a new ‘--no-build-hook’ option
+*** ‘guix’ commands that build packages have a common set of options
+*** ‘guix hash’ has a new ‘--recursive’ option
+*** Daemon no longer bind-mounts the host’s /dev (improves reproducibility)
+** Programming interfaces
+*** New (guix pk-crypto) and (guix pki) modules for public key cryptography
+*** New #:local-build? parameter for derivations that shouldn’t be offloaded
+*** (gnu system vm) has procedures to build VMs that share the host’s store
+*** New ‘text-file*’ procedure in (guix monads)
+*** System service definitions are now provided by the (guix services) modules
+*** New X and SLiM services in (gnu services xorg)
+*** New (guix git-download) and (guix svn-download) for git/svn checkouts
+** GNU distribution
+*** FIXME new packages
+*** FIXME package updates
+*** New ‘gcc-toolchain’ meta-package, makes it easy to install a GCC tool chain
+*** libc’s Info manual is now installed
+*** Binutils is built with --enable-deterministic-archives
+*** Packages that populated man/man* now populate share/man/man*
+*** Many other packaging improvements
+** Bugs fixed
+*** ‘guix pull’ consumes less memory, compiles in parallel
+*** ‘guix package --list-*’ gracefully handles EPIPE when used in a pipeline
+*** ‘guix package’ handles collisions between a symlink and a directory
+    (http://bugs.gnu.org/17083)
+*** HTTP downloads provide a ‘User-Agent’ field (http://bugs.gnu.org/16703)
+*** ‘guix package’ no longer shows misleading installed package number
+    (http://bugs.gnu.org/16484)
+*** Manual suggests ‘useradd --system’ (http://bugs.gnu.org/16289)
+*** Python is built with ctypes support (http://bugs.gnu.org/16569)
+*** HTTP/TLS connection not terminated properly (http://bugs.gnu.org/14884)
+*** Gracefully handle poorly behaved HTTP servers (http://bugs.gnu.org/15733)
+
 * Changes in 0.5 (since 0.4)
 ** Package management
 *** GNU package descriptions synchronized with the ‘gnumaint’ repository