Seems lacklustre now, but I remember the time these stats were pretty much where it was at for the hot hatches.
When I first started driving anything sub 9.0 secs was considered quick. The term "Hot hatch" still hadn't been coined. I learned to drive in my fathers Capri 2000GTXLR which was supposed to be a nice car in it's day, (Odd V4 engine) but took 10.6 sec to get to 60mph. I think the original MK1 Golf 1.6, took 8.9 secs to hit 60 and that was considered a "quick car" in it's day. The Up's tiny little 1.0 gets it there in about 8.8 I think. Pretty impressive really. Plus I don't think it will be long before the "Re-map" peeps look to squeeze some more out of it.