Yes, but being drip-fed to the market over the course of a year, and many being left hand drive (some still in the process of being shipped from the USA) means they'll attract interest from all over Europe so I don't think it'll have a huge effect and certainly not a negative one.
Have seen a couple some are supprisingly good cars in varying conditions apparently there "May be" a quad cam Carrera 356 GT be a supprise if it gets auctioned my feeling is the rarest and best wont make the auction.