Firefox 45 is out for Desktop PCs and for Android. This release will have long term support (ESR), which means it will get updates for the duration of an entire year. Firefox 46 will now become the beta branch and Firefox Developer Edition will get version number 47.
Mozilla has made Firefox Hello, its WebRTC-based communication feature as a system addon. This change should come to the stable channel of Firefox with version 45. If you have no use for Firefox Hello, you might want to disable it. However, it is not clear or obvious how to do that so let me show you.
The popular browser, Mozilla Firefox has got another significant UI update. In its Nightly branch, which gets all the new features before other development channels, developers have added an improved Profile Manager.