Kicking off today in Los Angeles, the Electronic Entertainment Expo has already seen a slew of announcements about new devices and games from Microsoft, Sony Playstation, Alienware, Dell, and Razer, among others. Being held at the Los Angeles Convention Center, the 23rd annual E3 Expo is open to the public for the first time this year. The event runs through Thursday.

At the event, Dell announced that its new virtual reality-ready Inspiron Gaming Desktop (pictured above), powered by Microsoft's Windows 10 operating system, starts shipping in the U.S. today. And yesterday Alienware unveiled a host of new Windows 10 gaming devices, including two new Area 51 systems with multi-core processors from Intel or AMD.

Meanwhile, Sony Interactive Entertainment announced yesterday that is has now sold more than 60.4 million PlayStation 4 systems around the world, with nearly 490 million copies of PS4 games sold either at stores or via digital downloads.

New Windows 10 Xbox Games

Yesterday's PC Gaming Show at the E3 Expo included news about a number of new games for Microsoft's Xbox. To mark the 20th anniversary of Age of Empires, Microsoft said it will be coming out with an update, called Age of Empires: Definitive Edition, exclusively for Windows 10. Online sign ups are now underway for a closed beta that's "coming soon."

Among the other new Windows 10 titles arriving for Xbox will be Forza Motorsport 7 and Sea of Thieves. Microsoft has made numerous updates to improve gamers' experiences on PCs, including 4K support, a 21:9 aspect ratio, and uncapped framerates and refresh rates, Kevin Unangst, senior director for PC gaming at Xbox, said in a blog post yesterday.

Origin PC has also unveiled a new Windows 10 laptop designed for gaming: the EVO15-S. Featuring a 7th-generation Intel core processor, the laptop incorporates Microsoft's latest Windows 10 Creators Update and supports Nvidia's GeForce GTX 1070 desktop graphics.

Beginning June 27, Alienware plans to offer Nvidia's GeForce GTX 1080 with Max-Q technology with the release of its new 15.6-inch Alienware 15 notebook. Pricing information is not yet available.

Other coming releases from Alienware include a 25-inch gaming monitor starting at $499, an $89.99 Advanced Gaming Keyboard, a $119.99 Pro Gaming Keyboard, and two new editions of its gaming mouse.

Razer, LucidSound Release New Headsets

In addition to announcing its PS4 and game sales milestones, Sony Interactive Entertainment said yesterday that it plans to release several "highly anticipated" games this year, including Destiny 2, Star Wars Battlefront II, Gran Turismo Sport, and Uncharted: The Lost Legacy. Additional games from independent developers will include Pyre from Supergiant Games and Absolver from Devolver Digital.

Xbox One and PS4 gamers can expect to see new wireless headsets from Razer, which announced the coming release of its Razer Thresher Ultimate headsets with Dolby 7.1 surround sound and PC compatibility. Set to ship begin later this month, the headset is priced starting at $249.99.

LucidSound is also coming out with a new headset: the LS25 eSports Gaming Headset. Designed to "appeal to the eSports and competitive PC gaming community," the LucidSound headset will feature 50mm high-fidelity speakers, dual mics and a 3.5mm audio jack for direct-to-PC connections. No pricing or availability information has been announced yet.

Other E3 announcements so far include four new console games coming out from Nicalis and a Sound BlasterX AE-5 gaming sound card from Creative Technology.