Still doesn't exist, though it's a step in the right direction. Before, the most anyone had managed on the Raspberry Pi without the closed-source bootloader was to run small VPU programs that toggled GPIOs and talked serial; now this can run small ARM programs that do the same. It still needs some way to actually read programs from external storage and a whole bunch of (completely undocumented, IIRC) clock and power management hardware initialization.

Don't get me wrong, it's impressive what the Raspberry Pi community have managed given that just how heavily hamstrung they are here, but don't expect to be running Linux without the blob any time soon. I remember people involved in this talking about having reverse-engineered enough information to boot the ARM core in theory over a year ago. It's slow going.

I'm not sure everyone said it would never exist--just that it would be hard. There has always been a small but dedicated community around reverse engineering the thing. Though this has come quite a bit sooner than I expected!