Feature-wise, we know bits and pieces about the 1070 and have a very well-developed general picture of the 990 - enough so that I have nearly complete entries on both units in my pre/pro chart and receiver chart . We can deduce a lot about what each will offer. At this point, the 990 appears to take everything included on the 1070 and up the ante somewhat, with more inputs, a second zone, auto calibration (which we've seen no indication of on the 1070), balanced outputs, and a USB input. On the other hand, the 1070 will sell for at least $100 less and comes with its own amps. I'll be curious to see what comes out of the HE show that's now less than two weeks away.