In Jetpack 2.2.3, released on April 26th, 2013, we introduced a new widget called the “Twitter Timeline” widget. This widget allows you to display your tweets on your blog in a much richer way then you could with the old Twitter widget. Users can retweet, favorite, and reply to you straight from your blog. The experience is also much closer to the experience of Twitter.com.
The old Twitter widget — which shipped with versions of Jetpack below 2.2.3 — will stop functioning on May 7th. This is because of some changes Twitter is making with how developers communicate with their service. Our new widget uses their timeline product which allows us to offer a solution that will continue working while providing additional features.
The old widget will gracefully stop returning output after May 7th. Any admins on your blog will receive a message asking them to switch to the new widget.
Let us know if you have any questions or what you think of the new widget in the comments below!