After years in development, Verizon on Tuesday announced its official plans to roll out two huge new calling features "in the coming weeks," including HD voice and voice-over LTE, also known as VoLTE, according to The Verge’s Dan Seifert. VoLTE is a service that uses LTE data networks to carry voice traffic; typical cellular networks separate their voice and data streams. This means Verizon customers will be able to enjoy video calling features without needing to sign up for an extra service. The screenshot below shows how Verizon's dedicated video calling service would work. Verizon says it needed to substantially upgrade its networks to roll out VoLTE, but that’s also because VoLTE will allow Verizon to introduce its first HD voice service, something its competitors have been working on as well. Also known as wideband audio, HD voice allows for extremely clear voice calls.