Western Digital just announced two new high-capacity 2.5" HD offering respectively 750 GB and 1 TB. Belonging to the Blue the rotation speed is set to 5400 rpm and they will be available in external USB case for respectively 189.99 USD and 249.99 USD. However, you should not already dream of installing such units in your MacBook. Indeed, those 2 drives have 12.5 mm thickness, making them almost impossible to be installed in most current notebook usually requiring 2.5" HD with a 9.5mm max thickness.
