With all the latest leaks i thought i'd post this 'How To' to help people who want an ISO but have to wait for 1 to be created and uploaded.
Cashis
for the kickstart and final test, and
SoLoR
for the command line options.
ikilledkenny
for creating the tutorial
You will need to download & extract
imagex.zip 
Note
It's best to extract to C:\ as this is the easiest destination to navigate to
Firstly: Follow the instructions
Here on how to attatch a VHD file. Step 1: Modify existing ISO
1, Open an elevated command prompt, type cmd into the Start Menu, when it appears right-click and select 'Run as Administrator' then agree to any UAC prompt.
Type the following once Command Prompt is open
Code:
c:
cd\
imagex /compress maximum /flags "Ultimate" /capture x: c:\install.wim "Windows 7 Ultimate"
X is the drive of the newly attathed VHD
This will now begin creating a new
install.wim file.
2, Now open an ISO editing application (UltraISO is a good 1, you may need to search for 'free ISO editors') and open an ISO file for a previous build of Windows 7 (e.g. 7201). Navigate to
\Sources and locate
install.wim and delete it, then
add the newly created file to the ISO in
\Sources.
3, Save the ISO, burn a disk image and boot from it. You will notice that the install is for the previous build but the files and arhitecture are for the latest build.

Note
Unregistered ISO editors can only save 300MB, that is why a search for 'free ISO editors' is needed
Step 2: Extract & re-burn ISO
Follow the instructions in
Convert a VHD File to a ISO File kindly created by
ikilledkenny 
Information
The only ISOs that work with the 7260 VHD seem to be 7201 & 7100, so if you have that, the 'How To' should work

Note
ISOs made with 7100 can only be upgraded by running the setup.exe in compatability mode for Vista