Clearly it is based on an older chassis that has been jettisoned. Perhaps there will be a 6800(M) offering the 8 slice capability of the 6700, or perhaps the 6700 doesn't have enough volume given its price point and the 6600(M) is going to be the new 'top of the line' radio.
So come on flex, let us 6700 owners know where we stand!
Being a 6500 owner, I think the best thing that has come out of Flex is the IOS interface to the iPhone/iPad. For me, with having developed the skills of using VPN thanks to the help on this users group, I am contented regardless of what comes next. Perhaps the newer radios will become appealing but for the time being, I am quite happy.
On the plus side, I think we can logically surmise what's going to happen to the 6700:
* Receiver hardware improvements have been made to 6600 (Contest grade filtering, etc), so now the 6600 has a better receiver than the 6700
* Two SCU's are in the 6600 so it probably has the 6700's Receiver Diversity capability
* Due to its price, sales numbers on the 6700 was no doubt considerably less than the 6500 and 6300, hence the need to push some of the 6700 features down to 4-slice models
* The larger 6400/6600 case utilizes the fairly small Maestro sized monitor. I question what 4 slices will look like on a screen this size, so it's a safe bet we won't be seeing 8 slices on this screen... so I seriously doubt we'll see a 6800M model
* The 6600 has an additional (2) Transverter port, while the 6700 only has one
Like you, I bought my 6700 specifically for its 8-slice capability (and VHF range). Perhaps the hand-writing is on the wall 6700. Hopefully FRS won't leave us 6700 owners hanging too long before giving us the scoop.
The 6700 and Maestro was my first Flex experience. Based on how FRS handles hardware improvement support for the 6700 will determine whether I stick with Flex or return to ICOM.
The Flex-6700 remains the "king" of the bunch.
Of the differences between the Flex-6700 and the Flex-6600:
It is possible to emulate the 6600 filters with some modestly priced externals for the 6700.
You cannot add a second transverter port to 6700, so you need to use external switching if you want more than ONE transverter hooked to your 6700, or if you want more than TWO transverters hooked to your 6600.
You can choose to not use Slices E, F G & H on your 6700 reduce to only four slices like the 6600. <grin>
The will remain packaged in different form factors.
The 6700 isn't offered in an M model.
The 6600M is 3-4 months out, a 6600 a while longer out, but you can buy the "King" 6700 now (with or without a Maestro, though a new Maestro is out eight weeks or so).
I think that covers the main parts.