THE CUTTING EDGE/TECHNOLOGY NEWS : MORE ON TECH : Also

Sony Corp. will unveil its next generation of Walkman personal stereos today at an event in New York meant to coincide with the 20th anniversary of the device. A new Walkman model can play digital music downloaded from the Internet or transferred from a compact disc to a computer’s hard drive. . . . Advanced Micro Devices Inc. and Motorola Inc. may be in talks to extend an existing agreement to include making Motorola’s G4 chips, the brains of Apple Computer Inc.’s Power Macintoch computers, at AMD’s new factory in Dresden, Germany, analysts said.