Apple has today taken a decisive step in the development cycle of its operating systems with the release of the versions release Candidate (RC) of iOS 26.4 y macOS 26.4These compilations, distributed this March 18th 2026These represent the final testing stage and are usually identical to the versions that will reach the general public in the coming days. This move also affects the rest of the ecosystem, with the rollout of RCs for iPadOS 26.4, Watch 26.4, TvOS 26.4 y visionOS 26.4.
The arrival of these versions comes just nine days after the fourth developer beta, demonstrating an acceleration in Cupertino's release schedule. RC It indicates that Apple considers the software to have reached the necessary stability for commercial exploitation, unless a last-minute critical error is detected that requires a second build before mass deployment.
An ecosystem ready for upgrade
The release of these builds is not an isolated event, but rather aligns with the recent hardware refresh that the company has carried out during this month of March. The integration of macOS 26.4 This is especially relevant for users of the new MacBook Neoensuring that the operating system natively takes advantage of the chip's capabilities Pro A18 which integrates this entry model.
For its part, iOS 26.4 It is positioned as a maintenance and refinement update following the changes introduced in previous versions of branch 26. As it is a release CandidateDevelopers can now perform final compatibility tests on their applications to ensure a smooth transition when the update is released to all users.
Availability and final deployment
Currently, these builds are available exclusively to registered developers. Users can access them through the system settings on their compatible devices. As usual, Apple recommends against installing this software on primary devices because, although it is a near-final version, it is still pre-release software.
If Apple's historical release pattern holds, it's highly likely that the final version of iOS 26.4 y macOS 26.4 will reach all users during the next week. This update cycle strengthens ecosystem cohesion, allowing shared features between the iPhone, the Mac and the iPad operate under the same safety and performance standards before the end of the first quarter of the year.