V15 Nitro PCIE 4x and NVME boot support?

This question is regarding the brand new Samsung 850 Pro M keyed NVME SSDs: http://www.amazon.com/gp/product/B01639694M?psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s00

I read this topic however this is for a B+M keyed SATA SSD: http://community.acer.com/t5/V-and-VN-Series/Samsung-SSD-for-Acer-V15-Nitro/m-p/353014#M2672

" SATA SSDs and SSDs that use two PCI Express lanes tend to use keys B and M to maximize compatibility, since both connectors can deliver both SATA III and two PCIe lanes. The very fastest SSDs tend to be M-keyed since it's the only one that delivers four PCIe lanes" - http://arstechnica.com/gadgets/2015/02/understanding-m-2-the-interface-that-will-speed-up-your-next-ssd/

My questions are:

1. The VN7-592G-71ZL has an M keyed M.2 slot, does this mean that 4x PCIE support is provided? It wouldn't make much sence to provide a M keyed M.2 slot and remove the 4x PCIE when Acer could of simply used a B and M slot to maximize compatability for SATA.

2. Can the VN7-592G-71ZL boot off a NVME SSD, as in does the BIOS have NVME support?

3. If the BIOS doesn't have NVME boot support, how could I reach Acer engineering to add NVME boot support? If the VN7-592G-71ZL has 4 lanes of PCIE, there is nothing but a BIOS update holding back NVME boot support.

Thank you!