Winamp lists what comes with the Android app, version 0.9.2:
Wireless Desktop Sync
No need to tie your Android phone down. Enable Wi-Fi sync and leave your cable behind. Now your playlists are also synced wirelessly.
SHOUTcast Radio
Extend your listening experience beyond your own library. Search, Favorite and play over 40,000 internet radio stations.
Android Widget Players & Shortcuts
Now in addition to the standard widget there is a new smaller (4x1) widget. You can also add your favorite playlists to your Android home screen, as well as enable playback control from the lock-screen.
Now Playing
Displays song info, album art and more. Press and hold on the song info to interact with other apps like Pandora, YouTube and the Amazon MP3 Store (requires that these additional apps are installed on your device). Get Artist information like bios, pictures, and more by clicking on the info icon.
Persistent Player Controls
Intuitive interface with player controls that are always available. Quickly pause, change tracks, manage your play queue, see what's playing and access the Winamp Home screen.
Play Queue Management
The play queue is a temporary track listing that allows you to easily see what's playing next, jump ahead or change the order of tracks in your queue. And if you like, save it as a playlist.
Scrobbling
Supports scrobbling with the Last.fm app installed (on your Android device). Capture all of your mobile listening history in real time.
Language Support
Brazilian Portuguese, English, French, German, Japanese, Polish, Romanian, & Russian. More to come.
For home Android users, the app will likely be used daily, especially the wireless sync feature.