Having investigated several options I kept bouncing between OblyTile and Ben Hunter's Deployment Guys post (http://blogs.technet.com/b/deploymentguys/archive/2012/10/26/start-screen-customization-with-mdt.aspx)
I very much struggle to understand why Microsoft haven't made this an easy to configure option given how much value a properly customised Start screen will add to users. From reading all the information out there it seemed that the device would need to be sysprepped before obtaining the AppsFolderLayout.bin file or an unattend.xml file would work. Either way the start screen wouldn't have the high quality tiles OblyTile is able to help create.
I've since managed to get this working in a much simpler way where the files can be created by one user and then using simple copy commands or a simple batch file used to copy the files to the Default User account.
Note: I'm not sure whether this will work on the newly released Windows 8.1.
Procedure:
Step 1: Log in
to a Windows 8 tablet using any domain account.
Step 2: Remove
the read only flag on the following file:
C:\Users\{Account Name}\AppData\Local\Microsoft\Windows\appsFolder.itemdata-ms
Step 3: Launch
the OblyTile application (version 0.9.1 or later) elevated. Click the Settings
icon and ensure the tiles are created for All Users. Select the name, icon
image and URL links as appropriate. Create the tiles. In the modern interface
start screen rearrange the tiles into the order desired. Zoom out to
rename/name groups.
Step 4: Copy
the C:\Users\{Account Name}\AppData\Local\Microsoft\Windows\appsFolder.itemdata-ms
file to USB:\Tiles\AppsFolder\appsFolder.itemdata-ms
Step 5: Copy
the contents of C:\Program Files\OblyTile to USB:\Tiles\OblyTile
Step 6: Copy
the contents of C:\ProgramData\Microsoft\Windows\Start Menu to
USB:\Tiles\OblyTile
Step 7: Create
a batch file called runme.cmd at USB:\Tiles\Runme.cmd with the following contents:
@echo off
xcopy ProgramData\*.*
"C:\ProgramData\Microsoft\Windows\Start Menu" /s /y
REM attrib -r
"C:\Users\Default\AppData\Local\Microsoft\Windows\appsFolder.itemdata-ms.bak"attrib -r "C:\Users\Default\AppData\Local\Microsoft\Windows\appsFolder.itemdata-ms"
xcopy AppsFolder\*.* "C:\Users\Default\AppData\Local\Microsoft\Windows" /s /y
if not exist "C:\Program Files\OblyTile" md "C:\Program Files\OblyTile"
xcopy OblyTile\*.* "C:\Program Files\OblyTile" /s /y
attrib +r "C:\Users\Default\AppData\Local\Microsoft\Windows\appsFolder.itemdata-ms"
REM attrib +r "C:\Users\Default\AppData\Local\Microsoft\Windows\appsFolder.itemdata-ms.bak"
Step 8: The USB:\Tiles\Runme.cmd file should be run at an elevated command prompt on any tablet to update the Start Screen layout for all new users logging on to the tablet or add as a deployment task in MDT / SCCM.