Don't know for sure but I'm sure they will. DFI would be a logical one to expect soon. Since the 680i is being touted as the "extreme gaming board", several more companies will jump in the mix. I just ordered the evga board you have listed. Seems like a great board as long as you flash the bios and get all the latest drivers. It seems funny that you have to fix it immediately upon opening the box but hey, we all love to tinker with this stuff and that is what happens when you want the latest and greatest. It seems like evga is very committed to supporting the board and responding to arising problems so I would just go for that one.
C2 Q6600 @3.6
2- 1GB Crucial Ballistix DDR2 1000(1100 @5-5-5-12 2.2v)
2 EVGA 280GTX in sli
2 WD Raptor 74GB(RAID0)
1 WD Raptor 150GB
X-FI Fatal1ty Edition (Beyerdynamic DT770/80 with PA2v2 amp)
PC P&C 1 Kilowatt PSU
Dell 3007 WFP 30" LCD
LG 18x DVD/CD RW
Silverstone TJ09 (5-120mm Sythe S-Flex fans)-Best case on the planet...
Watercooled. Iwaki MD20RLT>PA120.3(6 fan push/pull)>Apogee GT>2 MCW60's>T-line