Twitter's long rumored subscription service quietly launched late last month, courtesy of an update to the app's listing on Apple's App Store. Twitter Blue costs $2.99 per month, and for that price you'll get access to a number of features such as the ability to organize tweets into folders, use custom icons, and change the app's accent color.
Today, the micro-blogging service formally introduced Blue, with its first iteration now rolling out in Australia and Canada. Subscribers in those countries will pay CA$3.49 or AU$4.49 to have access to several premium features mentioned above as well as the ability to revise a tweet before it goes live with "Undo Tweet". This feature allows you to set a timer of up to 30 seconds, within which you can retract your tweet and make the necessary changes before posting it. More importantly, it gives you some time window to preview your tweet before anyone else can see it.
In addition, there's a new Bookmark Folders feature with which you can organize your saved tweets in a single location where it's easier to find them. If you'd like a more convenient reading experience, then the “Reader Mode” is your thing. It lets you view threads more easily by “turning them into easy-to-read text”.
Twitter Blue is initially available in Australia and Canada starting today, with the goal of gathering feedback in order to build more features for subscribers. There's no word, though, as to when the service will launch in other regions.