It seems that vat grown meat may only be a few years away. Probably as likely to arrive soon as the Flying Car, but meh.
Anyways, from the Memorandum of Association of The Vegan Society:
"In this Memorandum the word "veganism" denotes a philosophy and way of living which seeks to exclude — as far as is possible and practical — all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose; and by extension, promotes the development and use of animal-free alternatives for the benefit of humans, animals and the environment."
It does qualify this immediately after with a "In dietary terms it denotes the practice of dispensing with all products derived wholly or partly from animals". However, basing strictly off the philosophy that they define, does that mean that vat grown meat which is grown in a bioreactor from stem cells that were extracted years beforehand and then cultured to create many more chunks of tasty meats are vegan?
I dream of the day when a pack of sausages can have a "100% Pork, as approved by the vegan soceity" sticker on. And we'll all be driving around in flying cars.