|Twitter has released a new version of its free Mac client, v2.2.1. While mostly a maintenance update, it also adds OS X Notification Center integration, pushing alerts whenever a mention or direct message is received. Some of the update's fixes solve broken Growl notifications, the account switcher going missing in the composer window, and a bug that prevented un-favoriting tweets.
Music streaming service Rdio has meanwhile released v2.2 of its iOS app. The title now lets people search for friends, artists, and record labels; the first and third options make it easier to follow friends and see the top albums and artists on a label, respectively. Other changes are minimal, but do include a new look for the sliding side navigation.