Sigg bottles have contained BPA. Much different than what they have said in the past.
There are people out there who say that BPA isn't a problem, and as far as I'm concerned, it's academic in this case. The bottom line to me is that they were not honest about their product with consumers.
I used to carry a Sigg bottle and even talked with some folks at the company back in February of last year. But after some research, I decided that i'd be happier with a stainless steel bottle than an aluminum one with the coating. While Sigg states that they have extensively tested these coatings, my thought has always been "Why take a chance?".
According to the president of the company, Steve Wasik, the bottles in question are pre 2008 and you can figure out if you have one and see a list of FAQ here. In addition, if you want to email Steve himself, he can be reached at steve.wasik.ceo(at)sigg.com.
Supposedly they are accepting returns of BPA bottles but I can't find any info. I'll post it up when I do.
Update: The Sigg Bottle Return Site is http://mysigg.com/bulletin/exchange_program.html. You ahve to get your bottles in by 10/31 and you are required to pay to ship it to them.