I believe all 2003s will have some 100 year insignias. The red, blue and white will come with the least amount of badging. They will have a tank graphic not the cloisonne emblem like the silver, gunmetal and black. The HD site lists what each bike and color come with.
From what I have seen on this site, most waits are in the 2 - 5 month range. My order was placed 7/23 and I'm still waiting for the call.
I doubt (with a 99.99999999% certainty) you can get a '03 w/o any insignia. H-D is not in the one-off custom business. You can get a customized model, but you have to order all the color shop pieces with the bike. (BIG $$$$). Every model has some insignia in varying degrees. If you don't want that stuff, you can take it off after delivery (but you will still have the emblem that is cast into the crankcase) or find a leftover '02 without any anniversary badging. The wait depends on the model, and specific dealer allocations. It can vary quite a bit, you have to shop around.
You want a 2003 Harley Davidson but don't want any emblems?
Well, you can purchase one of the two CVO model bikes, which this year are a Duce and a Road King. Very good looking bikes painted in Annivesary Gold, but no 100th anniversary logos (think my spelling is off today)...
Or you can purchase a 2003 model, and swap out the Fenders and Gas Tank with a paint kit (a pre-painted set). This years offerings are pretty nice!
Or you can purchase a 2002, but there are a few minor differences on some models, like the 2003 Fatboy (all softtails in fact) have a larger rear tire, that looks really nice! Especially when compaired with a 2002 Fatboy from the back! New rearview mirrors on all the bikes, some engine and EFI modeling changes, etc.