Once NPCs and Vehicles go in, possibly when we go to 1.0 but its possible it'll happen before, we will increase in price one final time to our release price. That will be the final 1.0 price of the game. At this point we will perhaps consider going beyond 40% in sales, but again, we will only go as far as to keep the original alpha price the cheapest the game has ever been, so it'll be a bigger % of a higher price that will likely amount to the same price it is now during the 40% sale anyway.
So if you're on the fence about buying, or holding off for a cheaper price, then just bear in mind that it will be some considerable time. I would be amazed if you could get the game cheaper any time next year. Perhaps the year after.
As such it was a decision we made very early on that we would not under any circumstances let anyone else who purchased the game during development, or for a good period after it was completed, get the game for equal or cheaper than those original supporters paid for it.