Yes that's true.
VMware has announced the End of Availability of all vSphere Storage Appliance product versions, effective as of April 1, 2014. After this date, customers will no longer be able to purchase these products. All support and maintenance for vSphere Storage Appliance will be unaffected and will continue as per the VMware Life Cycle policy. Refer to the VSA FAQ for more information. vSAN is the way forward for Software Defined Storage and there is an upgrade SKU available to move from the VSA to vSAN.
Please refer to the Lifecycle product matrix https://www.vmware.com/files/pdf/support/Product-Lifecycle-Matrix.pdf for the end of support dates.