Just found the new Weight Watchers Smoothies at the local Nob Hill store in Redwood City (Redwood Shores, actually).

While it doesn't have the Splenda logo on it, they are made with Splenda. Interestingly, at the bottom of the label I noted that they are made for Weight Watchers by Wells Dairy - the folks behind the Blue Bunny low carb products.

So while these aren't as low carb as the Blue Bunny "Sweet Freedom" smoothies with Splenda found at the Wal Mart Superstores (5 total carbs per bottle), I suspect they will have wider distribution and be easier to find.