You can buy the subscription, and there is a Perpetual licensing option.
Basically, if you have an existing Creative Cloud subscription, you will get the DC at no extra charge. The new version might be simple to understand, but the subscription service is more complicated. Adobe ® Acrobat ® DC Pro comes with a touch-enabled interface and a new document cloud online service that gives you access to files through mobile apps and web browsers. Convert and create PDF from various types of files like Word DOC, Excel XLS.
It includes a straightforward menu and easy access for modification.