Those coupons will eventually let folks claim their handset, when it arrives, on a first-come-first-served basis. Only the carrier’s customers are eligible and only upon contacting sales representatives in one of the carrier-owned brick-and-mortar stores or by calling customer support. As you could imagine, Deutsche Telekom is pretty low-key about the initiative and thus shuns from advertising it apart from a rather cryptic hint on their website. Shortly after the report was published, Bloomberg was able to verify it with a company spokesperson, who said:

…This past Saturday, Japanese blog Macotakara wrote (Google translation) that contract manufacturers Pegatron Technology and Foxconn have begun assembling iPhone 5 at a rate of 85 percent and 15 percent, respectively. The blog notes that the units are not yet being packaged in boxes until Apple iOS 5 is ready for prime time. With so much clues out in the open, it’s safe to assume that invites for an Apple media event are ready and that it is now up to Apple’s marketing and CEO Tim Cook to hit the Launch button.