The initial rollout will include devices running Intel Corp. (INTC) and ARM Holdings Plc (ARM) chips, making good on Microsoft’s promise to support both standards, said the people, who declined to be named because the plans are confidential. In embracing ARM technology, Microsoft is using the same kind of processors as Apple Inc.’s iPad. Still, there will be fewer than five ARM devices in the debut, compared with more than 40 Intel machines.