In fact, Magento 2 should have been published long ago. The release plan published at MagentoImagine 2014 shows that the time will finally come in autumn 2015.
Magento 2 release plan
2.0 DEV Beta Late 2014 Developer beta phase: Identifying and correcting conflicts with other programs or problems with certain hardware components before the program is released
2.0 DEV RC March 2015 Developer release candidate: final test version of the software
2.0 Merchant Beta Mid 2015 Merchant Beta: Shop operators can test and use this version, but errors cannot be ruled out.
2.0 Merchant GA Mid/end of 2015 Merchant GA: General Availability (GA), the version has been released for practical use and is available on the Magento homepage.
2.0 Ongoing Releases Early 2016 Errors and functions are corrected or integrated through updates. Current project status The current project status and the latest changes can be seen on the Magento 2 Github page. All changes and bug fixes are documented in the changelog.