All the option tables have been removed. 4 of them I think. Also, the table variables have changed. See 1.3 Table Variables for more information on that.
I’m not sure if theres plans for an upgrade file or not yet. I’m sure it wouldn’t be too hard to come up with something though to import all your old posts and settings into the new format.
Unless I’m misunderstanding something, after you upload all of the 1.3 Alpha files, simply run /wp-admin/upgrade.php and your database will be adjusted accordingly.
**Warning**If you think you may want to go back to 1.2.1, back up your database. Once converted to use in 1.3x, there’s no way to convert it back other than restoring a backup.
Nuclear Moose: In theory thats how its supposed to work.
I just went back and read the cvs log for upgrade.php and upgrade-functions.php (called by upgrade.php) and it is set to change everything over to the new schema including removing the option tables. I would recommend backing up your database before performing any upgrade though. Better safe than sorry.
