The new version will be released one week later as expected. The team need the time to test the new update component.
Good news: cURL will be supported in the new Joomla! Update component (com_joomlaupdate)!
Mark Dexter wrote: Hi all. We have decided to release 2.5.4 on Monday, April 2. We plan to build test packages tomorrow so we can thoroughly test it, especially the new update component.