I remember both 100€ and 40€ preorders included the "1st in the queue" feature - one possibility is that Jolla has a sequence, they won't tell you which number you are in that sequence, and they will be offering those 450 precious devices to the first 450 individuals who preordered the options that had the "1st in the queue" feature.

Now, read between the lines: this doesn't necessarily mean that if you preordered in the first day (or hour!) [and your address is in one of the "supported" countries], you will get the device. If more than 450 preorders from supported countries have been made in the same day (or hour!), then there is a chance that you won't get it, even if preordered in the same day (or hour!).

Another possibility is that this is all BS and Jolla is just doing whatever. We won't know this, as we didn't get the sequence numbers in advance. Even if they gave them away now, there will still be the possibility that they were tampered with.

Sadly, there is no strong evidence of anything, except that there are a few folks who got the email, and probably others who don't read/post in TMO. At the end of the day, 450 is a very low number if they are certain they'll sell in the 100s of 1000s.