It doesn't look like BCM is intending to release any more datasheets/programming information either, which is not surprising. There will probably never be any detailed information released, officially or otherwise, on any BCM SoCs, even after they're long EOL'd.

As far as openness is concerned the RPi is basically a smartphone/tablet SoC devboard, with most of the hardware proprietary - while its Chinese competitors (Allwinner, Mediatek, Rockchip, etc.) are officially quite closed too, the docs for many of their SoCs are available (admittedly leaked; but they seem to be turning a blind eye to it.) They're also at least a Cortex-A7.

I wonder how the RPi2 compares to this:

https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-...

Dual 1GHz A7s, 512MB, SATA, HDMI, USB, Ethernet (integrated on SoC, not through USB), fully open-source, in the same price range.