Tesla introduced the Model S 60 kWh battery last year as a more affordable option to increase interest in electric vehicles. The Model S 60 starts at just over $70k before incentives and the next model, the 75, starts at just under $80k. However, most customers ended up buying an equivalent to the Model S 75 kWh. Now due to the low demand for the 60 and to simplify the ordering process for their customers, Tesla is will be discontinuing the 60 kWh option and removing it from their lineup.
If you were hoping to still get a 60kWh Model S, you have until April 16, 2017 to get your order in. Also, any 60kWh model will still have the ability to be upgraded to 75kWh via Tesla's over air update.