I personally like what the new Marantz Pre-Pro and the latest rendition of Yamaha AVRs are offering in the way of still having models that are basically 7.1 but giving one the option of adding the additional amps to expand things further, all done, in either case, without having to sacrifice performance and empty one's pocketbook.
The AV7005 has pre-outs for 11.1, but only an eight-channel DAC. This means that you can connect up to eleven channels of amplification and even configure eleven speakers, but you have to decide which seven you will use at any given time. If using PLIIz processing, the rear surrounds will be disabled and the wide speakers will of course not be used (not supported by PLIIz). If using DSX-Height, the rear surrounds and wide speakers will be disabled. If using DSX-Wide, the rear surrounds and height speakers will be disabled.
So my question still remains. Will the 998 offer 7.1, 9.2 or 11.2? Will outlaw throw us a bone?

We'll probably have to wait a little longer to know for either unit. We'll probably know about the 978 first, since it's going to be released first.