Digia's Heikkinen Jani shared this morning that the Qt 5.2 RC1 version won't be out tomorrow as was originally expected. The release isn't happening since there's still a lot of pending integration for Qt5 Git and so further testing is needed to verify the fixes and work through any issues. They are hoping though to have out a new pre-RC1 test snapshot soon. Ideally, Qt 5.2 RC1 will be released later in the week.
The delay in Qt 5.2 RC1 was shared via the mailing list.
The plan for Qt 5.2 is to try to officially release it in December. For those unfamiliar with the new features coming for Qt 5.2, there's a lot of new capabilities as outlined in this earlier article: new modules, proper iOS and Android support, QML improvements, a faster Qt Quick, etc.