As Microsoft has released the first updates for SharePoint 2010, I installed them.
When you will launch the SharePoint Configuration Wizard, and if you have multiple server installed in your farm, the wizard is checking if ALL of your server has the update installed. If one is missing, the wizard will not be able to continue until all the server have all the update installed.
Once the Configuration Wizard has finished successfully, you can check the update status from your Central Administration (Upgrade and migration\Check up products and patch installations status).
You will see which component has been updated in which version with a link to the related KB.