In December 2016, the Basic plan name changed to Individual. This new Individual plan includes all of the features that the Basic plan included. It is no longer possible to purchase a Basic plan from Smartsheet.
If you already own a license for a Basic plan, you will experience no change in service or features. You will, however, see the new name in the Plan & Billing Info section of the Account Administration form (to see this form, click Account > Account Admin in the upper-left corner of the Smartsheet window).
For more information about Smartsheet plans and pricing (including which features are included with which plans), please see our Pricing page.