Dealer or ford social contacts on Facebook and a few other outlets can supply you the VIN once it is avail. Then you will get a build date and once it's built you can get a rail tracking car number .. This will be a few weeks at least yet..
Take a look here
Get your order number and the dealer code from where you ordered from, then contact Ford Service via social media. I don't have a train car to track, but they have been pretty good about giving me data as my car heads closer to me.
I ordered mine 12/18/13. Just checked with dealer today, no VIN yet. He has previously checked with Zone and was told March build. Really hard to get insight into sales info. Overall FIesta sales are slow with glut on dealer lots. Plant was closed for 3 weeks over Christmas and was closed again first week of February. Since ST engine and transmission are sourced from Europe, where sales are hot, hard to know what, if any, supply issues exist for Mexican built STs. I suspect color ordered and options account for some of the variability in scheduling we are seeing. The bright side...it may actually reach 40 degrees here by the time my car shows up!!