I ordered a Raspberry Pi back in March (or was it the last week in Feb.) the day it was put on sale via Newark. I actually did it while I was at a conference. After what was a rather lengthy wait, it arrived just about 3 months later.
To be honest Beaglebone is more open source than Raspberry-Pi, it is also faster probably at least for general purpose stuff. What it doesn’t have though is HDMI on board or a price point of 35 dollars. You’ll need a 10 dollar SD card also so really 45 dollars is what a R-Pi costs to deploy.
For some things having real time access is more important for that Procyon and the ARM boards I build are better. They have a lot of resources and can do complex things like FLAC decoding, and they have pretty high memory bandwidth for a single task, again taking Procyon as the example it does 50 MB/s to SDRAM.
However, not having to do much but download a package of some complex library is a lot easier so I fully expect R-Pi to become the dominate internet electronic project gateway device for the DIY community.
I will likely be doing some add on boards for R-Pi, so stay tuned.