It is so happy that MovableType 5 open to download. Actually it is 5.01.
I did an test upgrade in my test blog. The upgrade procedure is similar to the before.
The upgrade log is
* Upgrading database from version 4.0076.
* Upgrading table for entry_rev records…
* Upgrading table for template_rev records…
* Upgrading table for Website records…
* Upgrading table for MT::Entry::Summary records…
* Upgrading table for Entry records…
* Upgrading table for Session records…
* Upgrading table for MT::Author::Summary records…
* Upgrading table for Template records…
* Upgrading table for Permission records…
* Rebuilding permissions… (100%)
* Updating existing role name…
* Populating new role for website…
* Migrating mtview.php to MT5 style…
* Assigning new system privilege for system administrator…
* Assigning to davidyin…
* Updating existing role name…
* Populating new role for theme…
* Upgrading Asset path informations…
* Classifying blogs… (100%)
* Merging dashboard settings… (100%)
* Migrating existing 5 blogs into websites and its children…
* Generated a website http://g2soft.net/
* Moved blog MT Unofficial Site (https://www.yinfor.com/blog/retired-sites-and-testing-site.html) under website g2soft.net
* Moved blog P site (https://www.yinfor.com/blog/retired-sites-and-testing-site.htmlp_site/) under website g2soft.net
* Moved blog Motion (https://www.yinfor.com/blog/retired-sites-and-testing-site.htmlmotion/) under website g2soft.net
* Moved blog MT4 forum (https://www.yinfor.com/blog/retired-sites-and-testing-site.htmlmt4_forum/) under website g2soft.net
* Moved blog Action stream blog (https://www.yinfor.com/blog/retired-sites-and-testing-site.htmlaction_stream_blog/) under website g2soft.net
* Migrating CustomFields type… (100%)
* Database has been upgraded to version 5.0016.
* Plugin ‘Professional Pack’ upgraded successfully to version 1.51 (schema version 1.51).