I am fortunate to have a DAB radio in car and find that the display does not show anywhere near the full information that I know other cheaper cars do (my wife's Berlingo shows the DJ, Song and information details)
Is there a software upgrade available or do I just accept a lower standard of product?

If this is the case, I think it is very disapointing. Normally, DAB radios have an user defined option of what information is shown on the display. As I don't have integrated DAB in my 07 SE, I have fitted a Pure Highway, which works very well (a couple of lengths of black velcro on the dash hold it a treat) and it gives a scrolling display of song and artist. I normally use an external aeriel but find a DAB radio works fairly well just connected to the nearside rear window aerial (even without the amp). Another thread mentions the roof dome containing a DAB aerial but I believe this is for Band L, which is not in general use in the UK (we are band 3, I think). My previous Vectra Design had DAB as standard with lots of bells so it is a pain that a so-called superior car does not have this throughout the range. If it wasn't wet and windy, I would go out to the car and have a look at the manual, which should tell you how to bring up the different displays.

You can change the size of the display by pressing the green phone button

Quite cool when it's a DAB system that I can't compare to any other car

It is a setup compared to what is out there from what I've been told Former Mod/Member, with the most post & Chicken George Arch nemesis

I'm not any help at all as I haven't sussed it all out yet, but I am impressed with the sound quality with DAB, I switched between the same station on FM and DAB and what a difference.

I'm surprised that you find DAB reception better than FM. In theory, FM should normally beat 'current' DAB for sound quality, with a good aerial and receiver connected correctly (the experts claim it is partly to do with limited bit rates on DAB broadcasts).
The main reason I want DAB is to be able to see the information on what is playing, so I now don't feel quite so agrieved at not having it available through the so-called Premium 'Alpine'. I'll stick with the bolt-on Pure Highway for now.