Edimax is generally known as a company that is offering budget routers with fairly antiquated UI's, but the company is working on new 802.11ac hardware that is looking like a big step up from its current hardware. Edimax has teamed up with Broadcom for the hardware and its initial products will feature simultaneous dual band support.
So far no model names have been decided upon, but we're looking at some pretty serious hardware here. The router processor is a 600MHz Intensi-fi chip from Broadcom based on MIPS32 architecture and it sports Gigabit Ethernet support, has dual PCI Express interfaces, a built in USB 2.0 host controller and DDR2 memory support. The 2.4GHz 802.11n module appears to be the BCM4331 which supports speeds of up to 450MHz as per the little sign next to the router. The only downside here is that the 802.11n module gets stuck with PCB antennas which isn't fantastic, but an acceptable trade-off on a product like this.
On the 802.11ac side of things we presume that we're looking the BCM4360 which is a three stream 802.11ac chip rated at speeds of up to 1.3Gbps, although Edimax sign states 1.35Gbps. The BCM4360 uses 80MHz wide channels and 256-QAM modulation as well as beamforming on both the transmit and receive end to manage these kind of speeds. It has a PCI Express interface and if you look at the PCB you'll see that the 802.11ac module is connected to the main PCB via a mini PCI Express slot.
The router doesn't appear to be a final product though and we're solely basing this on the fact that there are empty spaces for what appears to be a second mini PCI Express card, USB ports and various other components. Hopefully Edimax will at least go with a similar design for the final product.