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With all the talk of Nintendo Switch , it's easy to forget that Sony's PS4 is on an impressive run of form at the moment.

The PS4 Pro is only four months old and Horizon: Zero Dawn has been giving The Legend of Zelda a run for its money.

Sony's machine is set to get even better today as the Japanese company has issued the PlayStation 4.5 System Update that brings a tonne of new features to the games console.

For starters, you'll be able to connect an external hard drive to the system and expand the storage. Great news for anyone with a 500GB HD version of the console.

And if you're looking for a bit of customisation, you can now add in-game screenshots as wallpapers to the PS4's menu.

Here are the other key features of the PlayStation 4.5 System Update:

Improved 2D Images on PSVR

If you’re playing a game in PS VR and you return to the PS4 home screen, you may notice that the resolution looks lower than normal on the TV Social Screen. Following this update, you’ll find that the resolution of the system screen displayed on your TV is significantly better when you’re out of VR mode.

Also, the resolution of Cinematic Mode on PS VR will improve — if your PS VR screen size is set to Small or Medium, the frame rate of content viewed in Cinematic Mode goes up from 90Hz to 120Hz with this update.

Voice Chat for Remote Play

(Image: Andy Robertson)

Sony is adding voice chat when using Remote Play on a Windows PC, Mac or an Xperia mobile device.

This is especially useful if you’ve got a gaming session planned with your mates, but you're away from your system. You can switch your mic on and off via the microphone icon on the Tool Bar of the Remote Play app.

Boost Mode (for PlayStation 4 Pro only)

(Image: sonyplaystation)

The PS4 Pro gets a new feature in this update called Boost Mode. This feature has been designed to provide better performance for select games that have not been patched to take advantage of the PS4 Pro’s faster CPU and its faster and double-sized GPU.

Boost Mode provides a noticeable frame rate boost to some games with variable frame rates, and can provide frame rate stability for games that are programmed to run at 30 Hz or 60 Hz.

Depending on the game, the increased CPU speed may also result in shorter load times. You can turn on Boost Mode by going to Settings > System. Of course, not all games will be compatible with the new mode.