Update from 2 to 3

Is there an upgrade path from 2 to 3 or do i need to remove 2 first? Wanted to test the RC2 because with the 2.3 you cant add more templates on drupal 9 and as i read that is fixed in 3.0. Thank you.

Running: composer require 'drupal/wysiwyg_template:^3.0@RC'
Fails

./composer.json has been updated
Running composer update drupal/wysiwyg_template
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

Problem 1
- drupal/wysiwyg_template[3.0.0-rc1, ..., 3.0.0-rc2] require drupal/wysiwyg_template_core * -> satisfiable by drupal/wysiwyg_template_core[2.3.0].
- drupal/wysiwyg_template_core 2.3.0 requires drupal/wysiwyg_template ^2 -> found drupal/wysiwyg_template[2.0.0-rc1, ..., 2.3.0] but it conflicts with your root composer.json require (^3.0@RC).
- Root composer.json requires drupal/wysiwyg_template ^3.0@RC -> satisfiable by drupal/wysiwyg_template[3.0.0-rc1, 3.0.0-rc2].