I'm not quite willing to join your party.
As far as I can tell the Edison is a way cool device and I was excited to get one. But as soon as I found out the Intel Edison folks weren't providing the BSP in a usable format I chucked in a drawer and went back to the BeagleBone Black. I don't know Intel's marketing concept for Edison; maybe they don't want advanced developers to use the thing. I do think it's short-sighted and arguably inconsiderate to depend on Yocto/OE and not fully participate in its ecosystem. While putting out mega-bundles of sources meets the open source licensing requirements, it's certainly not the behavior expected of a team player. So I'm sympathetic in principle.
Nonetheless, linux-yocto is IMO not an appropriate list to discuss this. meta-intel might be appropriate, but if it's like meta-ti then still no. Nor am I convinced that Intel Corporate cares, nor that they're technically obligated to do it. I suspect they can argue that meta-edison isn't a publicly accessible layer, because they don't make it available as a layer. Posts on these forums might attract the attention of somebody who has the authority to make it happen, though.
In the meantime I'm hoping that the BeagleBoard-X15 that's been hiding deep in meta-ti for the last couple months will be the development platform for 2015. Kinda the opposite of Edison: the source is fully available, but the hardware isn't released yet.