Proton VPN has open-sourced its upcoming 8.0.0 release.
The codebase shift from wireguard-go to a new, Rust-based implementation dubbed ProTUN aims to improve stability and performance.
The release introduces a persistent kill switch for iOS and adds support for Apple CarPlay.
The team notes a technical limitation where specific Apple system DNS requests may bypass the kill switch, providing early visibility into the implementation before the official App Store rollout.
Changes inside the application
The main change in version 8.0.0 is the use of a new engine, called ProTUN, written in the Rust programming language. This replaces the older code used by the application. According to Proton VPN, this upgrade aims to be more stable, faster, and more responsive to attempts to restrict access to the Internet by third parties. In addition, the new engine allows for future additions, such as more sophisticated encryption systems.
Upgraded connection failure protection
The new version brings an improved protection mechanism known as a kill switch. This is a feature that cuts off internet access on your device if the VPN connection suddenly drops. This protection remains active even after restarting the iPhone.
With the new version, Proton VPN allows the use of local networks (such as for connecting to printers) and Apple CarPlay, even when connection drop protection is enabled. However, the company notes that some requests to Apple services may, under certain conditions, bypass this protection.
When will it be available?
Although the code for version 8.0.0 has already been published on GitHub, the company has not yet set a release date through the official App Store. The general public release is expected soon, depending on Apple's review process.
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