I find it funny how 98% of the pre-orders were special editions. Seems like we're all suckers. =]
Nah, i guess there are a LOT of fans that loved NS1 and they realize that they´re gonna enjoy it to death eventually (if not already at the start of Alpha)
And as for me, i thought (for at least a couple of years) to be a Constellation Member (i think that was the name), thus being a donator and contributing for their amazing work, but i didn´t get to do it. So i´ll also get the Special Edition, cause i never paid a single Euro to them, and i doubt they got any money with non-constellation members, since you´d only need to buy HL1 to play it.
Most likely they decided to use their own engine to "fix" this, and start getting the penny they deserve :p