Prepare NEWS file for Ganeti 2.6.0 rc3

Update NEWS regarding rc3 fixes and document changes in behaviour.

Signed-off-by: René Nussbaumer <rn@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

NEWS

@@ -2,10 +2,10 @@ News
 ====
 
 
-Version 2.6.0 rc2
+Version 2.6.0 rc3
 -----------------
 
-*(Released Tue, 03 Jul 2012)*
+*(Released Fri, 13 Jul 2012)*
 
 New features
 ~~~~~~~~~~~~
@@ -240,6 +240,10 @@ accept the target size of the disk, instead of the delta; this can be
 more safe since two runs in absolute mode will be idempotent, and
 sometimes it's also easier to specify the desired size directly.
 
+Also the handling of instances with regard to offline secondaries has
+been improved. Instance operations should not fail because one of it's
+secondary nodes is offline, even though it's safe to proceed.
+
 API changes
 ~~~~~~~~~~~
 
@@ -295,6 +299,27 @@ verification. This will remove some rare but hard to diagnose errors in
 import-export.
 
 
+Version 2.6.0 rc2
+-----------------
+
+*(Released Tue, 03 Jul 2012)*
+
+Second release candidate for 2.6. The following changes were done from
+rc2 to rc3:
+
+- Fixed ``gnt-cluster verify`` regarding ``master-ip-script`` on non
+  master candidates
+- Fixed a RAPI regression on missing beparams/memory
+- Fixed redistribution of files on offline nodes
+- Added possibility to run activate-disks even though secondaries are
+  offline. With this change it relaxes also the strictness on some other
+  commands which use activate disks internally:
+  * ``gnt-instance start|reboot|rename|backup|export``
+- Made it possible to remove safely an instance if its secondaries are
+  offline
+- Made it possible to reinstall even though secondaries are offline
+
+
 Version 2.6.0 rc1
 -----------------