With the new subscription model, Encore is no longer updated with the other Creative Cloud apps. While installing these applications, there is no option to download Encore CS6, which is the last version of this program to be available. The CS6 applications are still available within the Creative Cloud subscription. Encore is still available for any subscribers to the Creative Cloud.
This document is to help make sure that Encore is fully installed and ready for use: http://helpx.adobe.com/encore/kb/encore-cs6-installed-cc.html
What other software authors DVD and what will replace encore cs6 in the future.
No other Adobe software authors DVDs (except maybe Premiere Elements), and since Encore continues to work, unless you have the need for a feature that Encore does not have, then continue to use Encore!