The Email Client Update is already included in the most recent firmware versions!
That update was for Belle (not Refresh/FP2).
The MS Apps can now be installed via SW Update directly on your phone.
*** Update 2 ***
Installers for the latest official MS Apps & PixiEnablers are available here on my blog:
Microsoft Apps 2.0 & PixiEnablers slim Installers
*** Update ***
MS Apps for the Nokia N8 are now officially available, PixiEnablers v2.x also comes with that new package... you can get it via your Nokia Suite Updater.
As part of the "Microsoft Apps Bundle" the new email client can be installed via PixiEnablersNOCS_v1.0.145.
The Installer comes along with lots of unnecessary components. To avoid installing them, I created a cleaned up installer. This Package contains the new "Mail Client" update & "Mail, new Arrival" widget only:
Email Client Update v3.04 - English
In my experience the installer works best right after flashing.
If there are already existing mailboxes, the installations takes a very long time...
Installing the Email Client Update will break your msg. reader.
I recommend the update, if you do not care about text to speech.
Here is the unmodded PixiEnablers Installer: