This notification from today:
New Community Edition 2.0.x Patch (MDVA-532) Enables Upgrades to Magento 2.1 – June 22, 2016 A new patch, MDVA-532, enables merchants using Magento Community Edition 2.0.x to upgrade to Magento 2.1 Community Edition Release Candidates or GA software. More information about the patch and important instructions for command-line upgrades to Magento 2.1 when sample data is installed are available in a technical bulletin posted at http://devdocs.magento.com/guides/v2.0/release-notes/tech_bull_21-upgrade.html.
Says that you are able to update to 2.1.0 but I could update only to 2.1.0-rc3.
After copying the patch over I edited the composer.json to request 2.1.0 but I get this error:
Problem 1 - The requested package magento/product-community-edition 2.1.0 exists as magento/product-community-edition[2.1.0-rc3, 0.42.0-beta7, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.1.0-rc1, 2.1.0-rc2] but these are rejected by your constraint.
2.1.0-rc3. Is there anything else that I should do? The documentation mentions editing composer.lock only for EE.