Normal procedure is to tell everyone who hasn't got it first, so that the person who has can't spill the beans first and cause an issue. So no news is good news.
IME the opposite is actually true.
Most companies make the offer to the successful candidate first - on the premise that if they decline, they have a second person waiting in the pipeline (who they haven't pee'd off yet by telling them that they didn't get the job)
Don't read anything into that though Andy.
The fact is that you don't know anything yet and there's no point in speculating. There are countless reasons why they might not have called you.
Despite promising you a call yesterday, there are lots of things that could have prevented that happening . . .
Something urgent might have come up that took precedence over ringing interview candidates . . .
It might be a very close call between you and another applicant and they want the weekend to consider it . . .
If they have a very bureaucratic HR process the decision might be tied up in red tape somewhere (and I talk from experience from both sides on this) . . .
Try not to dwell on it over the weekend - get out and enjoy yourself.
It sounds a great job though, so fingers crossed for you and let us know on Monday.