AMD intends to modify its process technology to increase the yield rate and frequencies of Phenom processors in order to improve the competitiveness of the CPUs against Intel's Penryn family, said the sources. AMD has already notified several motherboard makers that Phenom will now begin test-production in November or December, and will launch in first quarter of 2008, noted the sources. However, AMD has responded to this report by stating that the company's official launch schedule for Phenom remains the second half of 2007 and this schedule has not changed. The company added that it has not contacted motherboard makers concerning a delay to the schedule. With Phenom set to not appear in 2007, several motherboard makers have made plans to decrease shipments of socket AM2+ motherboards and to increase those of Intel's platform, added the sources.