This page lists important upcoming dates for consumers of Twitter's APIs. The dates listed will be as specific as possible, but may not be exact for various reasons. Please continue to follow @twitterapi and the Twitter developer blog for announcements about the platform.

Upcoming changes

Estimated date	Description	Announcement	Affected APIs
June 11, 2013	Retirement of deprecated API v1.0. Retirement of Basic Auth support on Streaming API.	Deprecation announcement Release of 1.1 More...	REST API v1.0 Streaming API v1.0
July 1, 2013	Support 64-bit user IDs.	Blog post	All APIs

Recent changes

                                                                                                                     

Deployed date	Description	Announcement	Affected APIs
April 18, 2013	Symbols entities in Tweets	Announcement	REST API v1.1 Streaming API
April 16, 2013	Blackout test on API v1 traffic. 23:00 UTC (4:00PM PDT)	Announcement	REST API v1.0 Legacy widgets
April 3, 2013	OAuth 1.0A compliance strictly enforced for token acquisition. See this for more info.	Tweet	OAuth 1.0 OAuth 1.0A
March 29, 2013	The GET lists/ownerships endpoint is available	Tweet	REST API v1.1
March 26, 2013	lang attribute & language parameter appears on streaming	Blog post	Streaming API
March 26, 2013	10,000 following cap on Site and User Streams goes into effect	Blog post	User Streams Site Streams
March 20, 2013	At 3pm Pacific, blackout tests occurred on all API v1 resources	Blog post	All API v1 resources
March 11, 2013	Released Application-only authentication	Blog post	REST API
March 6, 2013	lang attribute available on REST	Blog post	REST API
March 5, 2013	Retirement of deprecated @Anywhere API	Original blog post Updated deadline announcement	@Anywhere API
March 5, 2013	First blackout test of API v1.0.	announcement of blackout tests	REST API v1.0 Legacy "goodie" widgets
February 21st, 2013	filter_level attribute & parameter appear	Blog post	Streaming API
February 20th, 2013	t.co links begin to be generated with new length	Blog post	REST API Streaming API
February 6th, 2013	GET help/configuration returns new t.co length	Blog post	REST API Streaming API
November 5, 2012	Sitestreams certificate change.	Blog post	Sitestreams API v1.0 Sitestreams API v1.1
November 2, 2012	Changes to withheld content fields.	Blog post	REST API v1.0 REST API v1.1 Streaming API v1.0 Streaming API v1.1
October 25, 2012	Entities in streamed DMs.	Announcement	Sitestreams API v1.0 Sitestreams API v1.1 Userstreams API v1.0 Userstreams API v1.1