Fixed (OAuth): The oauth_access_type parameter was not respected in all cases. (issue 767)

Fixed (OAuth): Allow international domain names for OAuth URLs via punnycode input. (issue 772)

Feature (REST): API updates are now identified as being from API rather than web.

Feature (REST): The rate limit has been changed form 100 to 150. (documentation)

12:29 The documentation for the /search method specifies that all queries should be performed with an HTTP GET. On or after July 15, 2009, we will begin enforcing the use of HTTP GET for all queries. Requests sent to the /search method which are not performed with an HTTP GET will be met with an HTTP 403 response. (announcement thread)

14:28 We are going to be moving images to a new domain (twimg.com) to streamline our image hosting and offer better performance. We hope this will have limited impact as will only change the image URL. Example URLs include:

Profile images:

http://s3.amazonaws.com/twitter_production/profile_images/35240332/2929920.gif

http://a0.twimg.com/profile_images/35240332/2929920.gif

Background images:
http://s3.amazonaws.com/twitter_production/profile_background_images/18156348/jessica_tiled.jpg.jpeg
http://a0.twimg.com/profile_background_images/18156348/jessica_tiled.jpg.jpeg

[ed: no word on when this will happen yet]

(announcement thread)