After nearly two years, Twitter updated its official Mac client today. The app, which was presumed “dead” several times, has been updated to include Retina graphics, support for uploading photos, and 14 new languages. Twitter also says “more improvements” will come.

In a tweet, project lead Ben Sandofsky has announced he’s “taking a break” from Twitter for iOS to focus on the Mac version full-time.

One of the updated Mac App Store screenshots reads “Search in real time. Multitask. Express yourself.” – and I found the use of “multitasking” particularly interesting as many often suggested Twitter didn’t care about their Mac app because of the existence of Twitter.com.

The app doesn’t come with any additional changes, but I’m curious to know if Twitter will update it to include its latest additions to the iOS client, namely Cards, the Connect tab, and Discovery. As for OS X itself, it’d make sense for Twitter to consider Mountain Lion’s existing notifications (which currently open in the Twitter website). There’s no doubt Twitter for Mac has a quite a bit of catching up to do after two years.

In case you missed it, here’s my original review of Twitter for Mac from January 2011.