Apple will be cutting the price of its PowerBook G4 this weekend, MacMinute sources have confirmed. The 400MHz model will drop US$400 in price, down to $2,199, while the 500MHz model will come down $500 to $2,999. Additionally, sources note that Apple will be ending its “Power To Burn” free CD-RW promotion in line with the price cuts. The promotion had been expected to run through Sept. 3.