2.5 inch hard drive with 15,000 RPM

Seagate announced 2.5 inch hard drive with 15,000 RPM. They already sells 10,000 RPM version, which is targeted for enterprise data centers with limited cooling and power. Massive number of hard drives generates a lot of heat and requires more electric power. The new version will provides faster IO, but still probably lock the speed of the 3.5 inch counter part.