Of course not, a huge number of (if not most) contracts contain agreements regarding future delivery of product or services. This is valid and normal arrangement. The contract is a promise to deliver that. If you don't deliver, you have breeched the contract.
Elon Musk signed contracts claiming he would deliver this in the future? There are verbal contracts, so what you're really saying was that he was in the room with each buyer, individually or with a group of them (such that he was aware of the identities of those he was contracting with), and made a legally binding verbal contract where he told them he would deliver these software features, under what conditions they would be delivered (time, location, other details), and then shook their hands?
Stretching contracts in the way you'd do it wouldn't be good for anyone.
I'm making a bit of a comparison, since the above was a pretty general statement. Yes, literally, marketing is generally not regarded as contract offers... but the rationale for laws prohibiting false advertising is that the product delivered should be the product promised. Technically the difference between whether something would be breach of contract or false advertising or fraud is a very fine line dependent on the specifics.
My point was just to say that "future promises" are not something that can just be disregarded.
