Shouldn't DX12 also offer performance gains in multi GPU situations, similar to CPU gains?

[TheMorningStar]

With DX12 offering native support for multi card solutions, on top of the lower level API (unsure if this also sees a benefit from lower level APIs) I'd expect some great gaines here also. There isn't really that much of a buzz about it at the moment with the CPU side getting most of the attention but I've seen some interesting stuff. Things we have looked at before like Lucid (I think it was) that looked at using multiple unmatched cards even from different manufacturers. APUs working alongside dedicated cards for small yet notable performance increases, again reminiscent of Lucid, probably nothing will come of multi manufacturers, because politics but I still think it's all really interesting.

Any articles looking at DX12 multi gpu scaling? I'd be interested to look them over, even if theoretical. I don't expect gains to be instant with everything else the industry has to play around with currently but I like to note the possibilities