M.H.
All my kids talked early and walked late so no help there however, my niece walked at 8-9 months and was also one of the most verbal kids I've seen, very early and just continued from then on. So I suppose it just depends.
I'm pregnant with #4 and I just hope that this one starts late because once mine start they never stop. :)
Hope this helps, at least a little.
Megan