While I can't think of a single 748i that I would like to spend money on at this time (needs to age a bit more) I have to say, it better be damn perfect after the ridiculously long wait since the first pictures surfaced.
I do hope this means we are a step closer to the real deal (741/2/3/4). The day that gets announced I'll throw a party.
Edit: I thought it was only a 748i sample, there is also a 748F. I might be more interested in some freighters, but still, the only thing that excites me about this news is the potential for a classics 74 series of molds within, say, 5 years, maybe?