I've seen people saying that. Yet that seems a good way of making sure that it doesn't get unlocked, especially in the home stretch when a couple of purchases from some holdouts might make the difference.
Don't buy into the hype about the "Mac community" pulling together to make something wonderful happen here.
It is a for-profit operation that the organizers single-handedly managed to mess up, crippling the momentum at almost every stage. People bought in early on the reasonable assumption that it would be professionally managed and that the 9,999 was an attainable target.
Instead, the organizers created a massive bottle-neck with an ill-advised invite-your-friends scheme. At stake was a pretty much worthless MacUpdate membership but it was enough to make potential customers to hesitate and, as any salesperson will tell you, that kills a sale.
Even when it was obvious that their attempt to spur more sales had back-fired badly, they went into denial and, incredibly, blamed the slow-down on the people complaining about the scheme within their discussion thread. They became so attached to this delusion that they stuck with the compulsory invites scheme and refused to recognize that they needed to DO something to get momentum going once again, just as MacHeist did by bringing forward one of their unlocks.
Personally, I think it's a pretty good (but not great) deal but, if Intaglio is what makes the deal worthwhile for you, hold off, because it turns out you can't trust these idiots not to screw up even the simplest things. Just wait until it's in the bag and then order through MacHeist. Quite a few people now regretted jumping in early, not least because they were the ones who were really getting screwed on the invites thing, until we complained loudly enough to get that changed.
If the current rate of sales holds up, I estimate that Intaglio will unlock around 7hrs before the promo ends.
Ironically, if they were smart and humble enough to take a lesson from MacHeist, they would drop the confusing invites requirement, unlock Intaglio now (safe in the knowledge that this would automatically generate another 1000 sales), bring forward the Tech Tools unlock to 8,000 and relaunch the whole damn promo for the final 4hrs in a fire-storm of publicity. Again, actually unlocking Tech Tools would result in a further 2000 sales anyway, so, they can't lose and I'm sure the developers would be relieved to see the promotion actually succeed.