Must be either high in demand, problems with the supplier, both or something else. Your guess is as good as mine (well probably not, since you asked). For further informations about your personal order, contact Digitec customer support directly for further assistance.
Ciao Mustang_SVT and thanks for your interest! :)
Unfortunately, we don't have any information about the "Silk White" version at the moment. If something changes, we will do our best to offer the product! :)
Cheers