Thanks Liam. Appreciate it.
Gav, sorry if I was being vague with my question. I just thought there might be a generic way of finding out the info and didn't think it would be image specific.
So I take it Neutrino is the linux distro used by all of the different images: sportster, next gen, etc, a bit like Debian comes in a number of flavours like Ubuntu (my current favourite), Knoppix, and Mepis, etc.