Yes I belive that 16:9 is what they designed this around. I've started up Photshop and have started to drag in Dials and stuff to see how it all sits. Having the layers is great as I can do each screen on a seperate screen and the have all the graphics as sub layers, this allows me to move them around to find ideal positions.
Also I can the get there exact cropping cordinates from here.
The SH5 Editor allows you to define the graphics sheet in dds format that you are importing from and the croping cordinates which I can get from photoshop. This will allow me to use the resolution I have defined getting 100% identical ingame to whats in my photoshop designed set.
I dont have 1080P in my current monitor to test, But I do have 1080P on my 47" LCD and HTPC system - So I may install SH5 there and give it a try.
What I dont know is can you define the Page size in the Editor to be 1080P or do you have to calculate relevant cordinates from the 1024x768 Page and adjust all the imported dial to set them to there relevant position in the 1920X1080 screen?
Can anyone confirm if you can start up the Editor in 1080P windowed mode or is it always at 1024x768.