Ok now you're definitely pulling off an appeal to authority. The bottom line is, unless it's part of an agreement upon purchase (contract, agreement, or something explicitly labeled on the box), you don't have any legal basis. Companies have to amend and push back launch dates and upgrades all the time, but they don't get sued unless there are extreme delays in certain cases. Can you name the law, or a precedent that would show that they are liable?
And you probably picked the worst example with Jesus. He claimed the Tribulation and end of days would be coming soon after his resurrection, but here we are nearly 2000 years later still putting up with his delays. What an *******.