Using your logic, as long as you do not charge for the x-plane 12 TBM update the promise is not broken. If your argument is correct, Hot Start has an infinite amount of time to release the update. There is an implied promise that the update will be released in a reasonable period of time. A year might be considered reasonable, 3 1/2 years is not.
X-plane 12 was released on 12/17/2022. On 12/20/2022 one of the principals at Hot Start published a live stream of the TBM actually flying in X-plane 12. In that stream he said the update was going to be a lot of work, it migh take a month or two. It is very likely that stream had a positive effect on the TBM sales. In the 3 1/2 years since that stream there has not been one single piece of concrete evidence that any work at all has been done on the update (a couple of photos on discord is not concrete evidence).
