Formerly known as Hitachi Global Storage Technologies and now a Western Digital company, HGST has announced the Travelstar 5K1500. It is the storage industry's first 2.5-inch, 9.5mm, 1.5TB mobile hard drive.
http://www.notebookcheck.net/HGST-announces-1-5TB-hard-drive-for-notebooks.92965.0.html