Nice. I'm surprised the wiki isn't properly updated, but I am 90% sure the New belt speeds are 15, 30 and 45 items pr second.
From Annotated roadmap on the Forum "Belt speeds increased 12.5% from 13.33/26.66/40.00 items/s to 15/30/45 items/s 1, 2"
From FFF #276: "At this point it is quite obvious to reduce the spacing to 8 pixels, which is a factor of 32, and gives a nice even 15.00 items/second, which is what we have done for 0.17:"