Anyone remotely familiar with the HTC or Sprint Touch will feel right at home with Verizon's version, the XV6900.

ENGADGET: Verizon XV6900 hands-on Mobile

Verizon has said it plans to implement the technology in 2014 and Sprint has said it plans to make HD Voice an option on the Sprint-exclusive HTC Evo 4G LTE.

CNN: Coming to your phone: High-definition voice

That's the province of handset manufacturers such as HTC, or service providers such as Sprint and Telecom Italia.

FORBES: Google's Call

Bita Goldman, 28, an attorney in New York, said she carries an extra charger with her for her HTC Evo smartphone, which runs on Sprint's WiMax 4G network.

WSJ: Fast Phones, Dead Batteries

As a bonus, we've got giveaways for everyone in the audience, plus one of the lucky attendees will walk away with that Modern Warfare 2 Xbox 360 bundle we just got our hands on -- and HTC will be giving away a Droid Eris Sprint Hero as well!

ENGADGET: The Engadget Show tapes today with HTC's Drew Bamford and Chris Grant of Joystiq (and giveaways!)

On this front, Sprint has had some success with the HTC EVO and partnered with Wired, Reddit and Ars Technica to spur 4G app development.

FORBES: Sprint Goes From Chump To Challenger In Long-Term Evolution Becoming A Smartphone Player

But while Sprint has been selling 4G phones from Samsung and HTC since the summer, Verizon so far has only offered a handful of laptop cards, known as dongles, which allow laptops to receive the service.

WSJ: Verizon Wireless to Showcase Google-Powered 4G Phones

Sprint announced it, along with a new, high-end HTC smartphone, at a Tuesday press conference at the CTIA Wireless trade show in Orlando.

FORBES: Sprint's First 4G Tablet: Maybe BlackBerry, Maybe HTC

During the week of CES, Sprint Nextel announced one new phone, the Evo Shift 4G from HTC, which runs on -- take a guess.

CNN: Android invasion arrives at CES

Is the increased buzz a sign that Sprint is accelerating its 4G deployment, perhaps to support its new HTC EVO phone, which runs on 4G, or other upcoming 4G devices?

FORBES: Why You May (Unofficially) Be Seeing Sprint 4G In Your City

Right now, HTC has only one 4G phone in the U.S., the EVO on Sprint Nextel, but the company is rumored to be launching several more, including its first 4G devices compatible with the LTE standard, in 2011.

FORBES: HTC's Head Of User Experience Outlines Future Of 'Sense'