New to the Opera 40.0.2296.0 developer update that was released today is a built-in RSS reader. Opera admits this initial RSS reader is "pretty rough on the edges" but great to see them finally supporting it with their latest browser.
Also of interest is that this developer build of Opera is shipping with Google Chromecast support. The Google Cast extension can be added to Opera for casting to any supported Chromecast device on your WiFi network.
More details via the Opera blog.