Well, if you include from the Type 052 on, the PLAN already has 13 relatively-to-very modern destroyers.China's modern destroyer force will be small, consisting of twelve modern vessels by 2010.
2 - Type 052C Lanzhou
2 - Type 051C Shenyang
2 - Type 052B Guangzhou
4 - Project 956 Hangzhou
1 - Type 051 B Luhai
2 - Type 052 Luhu
I expect we will see more added over the next three years, maybe three to five more, which will mean that by 2010 the PLAN will have 16-18 modern DDGs.
IMHO, by the 2010 time frame, it will be clear that the PLAN is developing into a very potent, modern naval force.
Not as many as the US for sure, but I also believe by then there may will be 12 or more very modern Type 054(A) FFGs as well. (There are already four built and two more building now). In three years they could easily build six more, if not more.