Appleinsider provides last minute specs on the rumored iBook and PowerBook releases this week.
According to the rumor site, the iBooks will start at 1.0GHz G4's for the 12" model and top out at 1.2GHz G4s for the top end.
Meanwhile, PowerBooks will settle into two speeds. 1.33GHz G4s for the lower end, and 1.5GHz G4s for the highest end.
Pricing is said to be comparable to current offerings with the exception of the 15" PowerBook/SuperDrive which may come in at $100 less.
MacRumors has also received confirmation of the following specs:
iBook (12.1"TFT/1.0GHz G4/512K L2 Cache /256MB/30GB/DVD-ROM/ CD-RW Combo drive/VGA-out/Enet/56K)
iBook (14.1"TFT/1.0GHz G4/512K L2 Cache /256MB/40GB/DVD-ROM/ CD-RW Combo drive/VGA-out/Enet/56K)
iBook (14.1"TFT/1.2GHz G4/512K L2 Cache /256MB/60GB/DVD-ROM/ CD-RW Combo drive/VGA-out/Enet/56K/APX)
PowerBook G4 (12.1"TFT/1.33GHz/512K L2 /256MB/60GB/DVD-ROM/CD-RW Combo drive/Enet/56K/AirPort/Bluetooth)
PowerBook G4 (12.1"TFT/1.33GHz/512K L2 /256MB/60GB/DVD-R/CD-RW SuperDrive/Enet/56K/AirPort/Bluetooth)
PowerBook G4 (15.2"TFT/1.33GHz /256MB/60GB/DVD-ROM/CD-RW Combo drive/Gig Enet/56K/Bluetooth/AirPort Extreme)
PowerBook G4 (15.2"TFT/1.5GHz /512MB/80GB/DVD-R/CD-RW SuperDrive/Gig Enet/56K/Bluetooth/AirPort Extreme/Backlit Keyboard)
PowerBook G4 (17" TFT/1.5GHz /512MB/80GB/DVD-R/CDRW SuperDrive/Gig Enet/56K/Bluetooth/AirPort Extreme/Backlit Keyboard)
Additionally... one report claims that the 1.5GHz PowerBook will provide a Build To Order option to upgrade the 64MB of video graphics to 128MB.