Nowadays, some people prefer to aggregate content using RSS feeds or social networks.
Let's review how you can access alternatively to all the previous resources and more.
For the OpenLayers 3 Developers mailing list, you can use atom or RSS feed, available at https://groups.google.com/forum/#!aboutgroup/ol3-dev
When you want to get news about OpenLayers 3 development, you have to rely on Github website capabilities.
You can see: