You can create DPS apps for Android devices using two different viewer types: native Android viewers and legacy (AIR-based) Android viewers.
Native Android viewers
The new native version of the Android app supports phones and tablets running Android 4.0.3 or later. To create a native Android app, use the Web-based DPS App Builder as described in this article.
Legacy Android viewers
The soon-to-be-retired legacy Android viewer includes a number of performance and device limitations. If you still need to create a legacy AIR-based Android viewer, use the desktop DPS App Builder. With the December 2014 release of DPS, the option to build the AIR-based Android viewer will no longer be available. See Creating legacy DPS apps for Android devices.
Support for both viewer types
For a time, Adobe will continue to support both of these Android viewer types. However, the legacy Android viewer will remain on the v29 viewer code base until the December 2014 release, when it will no longer be supported.
Note that two different versions of the Adobe Content Viewer are available in Google Play Store. The native app is called "Adobe Content Viewer for Android," and the legacy app is called "Adobe Content Viewer for Android (legacy)."