We used to have a "sticky" on warranties, and on it I posted a response from Swarovski about the change in policy, but it's no longer there. I think that was about 2 years ago, maybe a bit longer. As I recall, the wording of the response was a bit vague such that I got the impression Swaro would try to fix your bin even if it was older than 10 years, as Jan suggested.
However, at that time, Swaro also announced that the company would no longer keep spare parts longer than 10 years. So the "limited" in that U.S. limited lifetime warranty means that your bin might outlive spare parts to fix it if a part fails.
One of the great things about Swarovski bins and a justification for their high price was that they really could last a lifetime unless you are just a babe. Mooreorless sent his 20-year-old Swaro 7x30 SLC in for repairs, and it came back refurbished. However, Swarovski didn't offer as many models back then as they do today, so they need to keep a larger inventory of spare parts.
As the Monkees once sang: That was then, and this is now. Swaro fans will insist, no matter what the official policy, Swaro will fix your bin in 10 years and 1 day, or 20 years from now. Maybe, but only if they have enough spare parts.
Given Swaro's stellar repair and customer service reputation (except with fixing wonky focusers, which can be spotty), I would think that if the company couldn't fix the bins for lack of parts in 10 years or 20 years, they would offer you a more recent model in the same configuration. At the rate Swaro is increasing its prices, you will really make out, because your $2,500 bin will cost 4x as much in 20 years or about $10,000!
Brock