"Create New Post" page of the WordPress administration interface. Version 2.5
Most WordPress releases are code named after well-known jazz musicians starting after Version 1.0
WordPress .70 was released on 27 May 2003 and contained the same file structure as its predecessor, b2\cafelog. Only 0.71-gold is available for download in the official WordPress Release Archive page.
WordPress 1.2 was code named Mingus (after Charles Mingus), and released on 22 May 2004. It's notable for containing the support of Plugins. The same Plugin identification headers are still used unchanged in the latest WordPress releases.
b2\cafelog, more commonly known as simply b2 or cafelog, was the precursor to WordPress. b2\cafelog was estimated to have been employed on approximately 2,000 blogs as of May 2003. It was written in PHP for use with MySQL by Michel Valdrighi, who is now a contributing developer to WordPress. Though WordPress is the official successor, another project, b2evolution, is also in active development.