Any ideas or news about what the "is" model will be?

[LeMansX5]

The 4.8is replacement will be V8 turbo (or bi-turbo if its ready by then) with HP anywhere between 400-460. Doubt it will be manual, we don't even have the manual E60 M5 yet(I know its coming). Will be lucky to have the DCT/ZSG from new M3. But X6 will be more sporty with V8 bi-turbo and dynamic x-drive. Expect late next year and it will be followed by hybrid X5 in 2008 and X6.
More info here

[xdrive]

Originally Posted by LeMansX5

The 4.8is replacement will be V8 turbo (or bi-turbo if its ready by then) with HP anywhere between 400-460. Doubt it will be manual, we don't even have the manual E60 M5 yet(I know its coming). Will be lucky to have the DCT/ZSG from new M3. But X6 will be more sporty with V8 bi-turbo and dynamic x-drive. Expect late next year and it will be followed by hybrid X5 in 2008 and X6.
More info here

So it is possible that the upcoming 4.8is replacement will be a V8 turbo (rather than bi-turbo) and with no dynamic x-drive whereas the X6 will surely have a V8 bi-turbo with dynamic x-drive. Will the release of the X6 be around the same time as the 4.8is replacement? If so, why make the X5 second class compare to the X6?

[JCL]

Originally Posted by xdrive

So it is possible that the upcoming 4.8is replacement will be a V8 turbo (rather than bi-turbo) and with no dynamic x-drive whereas the X6 will surely have a V8 bi-turbo with dynamic x-drive. Will the release of the X6 be around the same time as the 4.8is replacement? If so, why make the X5 second class compare to the X6?

Because the X5 will be second class compared to the X6. The X6 will be positioned above the X5 in price and features. If they weren't going to do that they would have called it the X4.

[DINANM3]

I agree