We're not going to see dual PowerBook G5. How could they put 2 processor in 1 inch thin, around Hd, combo drive. Even right now when I work on a PB, i,m so surprised by his thinness, i wonder how they could actually put all the different parts in it. It's pretty fantastic... and now you're talking about inserting another processor, with the powerbook they have right now, it,S virtually impossible to do it. I've already seen inside of them, and there,s no more place! it,S full.
if they want to, they will have to change a little bit the "inside architecture". And finally have to improve some of the part in it, such as the HD, if they could make a smaller one... well you know waht I mean.
To conclude, I'm pretty sure Apple will release new Tower( introducing G5) before upgrading the portable department.