Google Plus developers have delivered some updates on the mobile app of the service:
– Explore interesting content on Google+ via the What’s Hot stream
– See a list of who +1’ed your posts
– View public or shared photo albums via the new photos tab now available on user and +Pages profiles
– Easily add multiple users to a circle
Google Plus has native mobile apps for only Google Android and Apple iOS platforms. Users on other mobile platforms have to rely on the mobile web app. this is probably hurting the popularity of the service. Remains to be seen when Google would release native apps for Blackberry, Windows Phone and Symbian platforms.