Google updated its Google+ app for Android to version 4.2.4 with 5 new features:
1. Search for posts, people, photos and communities — all from the same search box.
2. Dig deeper into stories you like on a number of different categories such as Music and Science to Sports and Photography.
3. More control over "Who can notify me” settings. Adjust who can buzz your phone.
Unique holiday features:
4. When you +1 a post in your stream, you'll see something nice :)
5. Last but not least - Shake your photos to make them snow ;)
Here's a video: