Got this off the Iguana Vanilla section:

"...The Iguana Vanilla, recently introduced to the market, has outsold all of our other flavored cigars. Iguana has a secret and the secret is the aging of the wrapper. Combined with the gentle infusing of the vanilla flavoring, Iguana delivers a smooth, rich smoke that’s consistently enjoyable, never cloyingly sweet. As an added plus which you don’t find in other manufacturer’s flavored cigars, with the Iguana Vanilla you have a choice between a rich, dark Maduro wrapper or a mild smoking Candela wrapper."

Not all versions are flavored, but the Vanilla version is, well, vanilla flavored.

TampaSupremo