As of February 1st, 2015, Autodesk will no longer offer the option to purchase an upgrade version of the latest software release if you own a perpetual license to a previous version. New versions will be available through purchase of a new perpetual license at the full new price, an existing Maintenance Subscription (Renewal) or Desktop Subscription (Rental) benefit.
Read more about it here.
The last day Autodesk will accept upgrade orders from a non-current version of software will be January 30th, 2015.
Customers with an Autodesk Subscription Contract eligible for a late renewal can place an order without addtional late fees until
October 23rd, 2014.
If you have a 2015 version of Autodesk Software without Maintenance Subscription, please contact Total CAD at (281) 445-6161 to review options available to you.