Well, the fact that they have been suffering from constant delays doesn't mean they're a hoax
If they were, why would they be creating functional beta boards, creating Linux images for running on the device. And these recent delays aren't necessarily their fault: they haven't promised any ship date, they just like to keep people informed with the last development news (and the development news include... internal shipping delays).
Note that "today or first thing Monday" is not when the boards will be able for people to buy, but when they will arrive from China (where the factory is, unfortunately as they said, manufacturing in UK would increase the price a lot) to UK.
But in fact, they started promising the boards would be ready for buying in the end of October last year... look at what date it is. In my opinion, they got much more people interested on the project than they originally thought, and since they want to make sure everything goes alright, they are slowly making things in a larger scale.
Actually, there seem to have been a lot more downloads of Linux images for the Pi than boards on the first batch: 10K boards made, and 12K downloads (from some unofficial numbers I've read). I host two download mirrors of their software and I can confirm I got at least seven downloads of a 800MB file in just two days (multiply that for lots of servers spread around the world, plus torrent...).
Because of this interest in the Pi, I'm sure I won't get a board from the first batch (even because these might have bugs/unexpected features).
On their twitter, the project just announced they would be switching their webpage to a static page next Wednesday, so their "servers wouldn't melt"
So that might mean they are going to release Raspberry Pi next Wednesday...