I still beleive that Apple will have there G5's ready for MWSF, but I am unsure about top speeds. As most people read at places like
http://www.macosrumors.com/ , they claim that the G5 will be released at top speeds 1.6GHz. I hope this is correct, becasue mac users not only deserve, but are demanding higher speeds, and the future of Apple may depend on it.
When the G3 Yosemetie first made its debut, it sported a totally new case design, and a new way of acessing its internals (totally getting rid of the horrible designs of the 500/600 series towers [ie my 8500]).
Then, with the G4, a little way along, the Cube showed up. Though it did not sell for reasons of pricing, it left a legacy behind - and that being, in my oppinion, to far ahead of its time.
This leaves to see if, a little while after the G5 debuts; Will there be a high-end consumer model G5 @ 1.0GHz?[assuming that 1.6GHz will be the top end of the PM line]
If this new machine were to fill its niche in the consumer market, or serve some other purpose in the galactic grandeur of the digital hub, we should be gauronteed that it will not fail(unless Apple makes the same mistake twice). But if anything, Apple has shown us in the past, they do not make the same mistake twice. So if they were to attempt something like the cube again, they would idealy change the price, and aim of the divice, so that it can not be put aside so easaly.
As an end to my blabber, I am not sayin there will be a sphere, and I highly doubt there will be, but there may be other ultra-compact supercomputers on the not-so-far horizon.