Let me chime in here. I am a Roland G70 dealer in California.
I too saw the 1.07 upgrade the other day and I loaded into my floor unit. Actually, I don't notice any difference. The site said that the effects settings were tweaked but I don't really hear the difference. I called Roland and spoke with a good friend of mine who is the "guru" of arranger keyboards at Roland US. He said that he had just received an email from Roland Italy with a downloadable new operating system which I thought was 1.07 as well. He was going to try it before releasing it to the US market. I haven't spoken with him since, but I can assure you Roland does know of a new update, but what it exactly is I don't know yet.
George Kaye
Kaye's Music Scene
Reseda, California