After a longer time frame than expected, we are nearly back on track with the Beta4 release. Some recent events took more time. One of these was the removal of the router feature, you can get more information here.
Many people have been working on fixing and testing lots of small bugs to make the new features more stable and robust. Although not saying we have reached the stability of a RC we feel we can say we are very close to it.
Our plan moving forward is to release a new RC every week. At the moment we are planning 3 RC releases and then we hope to move to stable.
In the RC1 release post next week, we will give details about the features it contains.
Have fun testing Joomla! 3.7.0-beta4.
Please test and submit your findings to the Joomla! Issue Tracker.
Please do not upgrade any of your production sites to the beta version as this is a beta and is ONLY intended for testing. There is no upgrade path from Beta.