The NYT describes the Twinkies Brand Bake Set which allows kids to make a home version of the famous Twinkie. Not exactly the same, but a similar item. The home version is under license, and offers a second official channel to get the Twinkie experience. But no mention is made in the article of the various bakeries that sell a store-made fresh gourmet version.

Fluff in NYC is one such place.

They sell Fwinkies and Fwodels. I think this is a chocolate-covered Fwinkie (an evolution of the original).