AINEWS
Qt 6.12 Beta Lands As Planned Final Qt6 LTS Release
Qt 6.12 Beta 1 ships for testing on 12 June 2026 as the planned last Qt6 LTS for paying commercial customers, while adding a mono view path for running Qt Quick 3D XR apps on 2D AR glasses.
Qt 6.12 Beta 1 ships for testing on 12 June 2026 as the planned last Qt6 LTS for paying commercial customers, while adding a mono view path for running Qt Quick 3D XR apps on 2D AR glasses.
Qt's commercial customers now have a concrete horizon for closing out their Qt 6 roadmaps. The Qt 6.12 Beta 1 release, available for testing on 12 June 2026, is positioned as the planned final long-term-support release of the Qt6 series for paying commercial users, with an official Qt 6.12 LTS targeted for around 22 September 2026, according to Phoronix's coverage of the release. For engineering teams that have been tracking the Qt 6 line since the 6.5 LTS, that timing turns the 6.12 beta from a routine update into a planning marker.
The most visible new capability in this beta is a developer-facing configuration for XR on 2D hardware. Qt Quick 3D XR now exposes a mono view configuration that lets the same XR application code run on 2D AR glasses rather than only on stereoscopic headsets, as reported by Phoronix. The practical effect is that a Qt Quick 3D scene authored once can be deployed to a wider range of AR-shaped displays without a separate rendering fork, which is the kind of low-friction reach that matters for industrial, logistics, and field-service applications where AR glasses are increasingly the device of record.
The other material graduation in this release is Qt Canvas Painter, which moves from technology preview to a fully supported module. Canvas Painter also integrates with the Qt Graphs module, giving commercial Qt shops a maintained 2D graph rendering path in place of the preview-era code that previously filled that role, per the same Phoronix write-up of Qt 6.12 Beta 1. That graduation is the kind of detail that does not generate headlines but does change a maintenance liability into a stable dependency for product teams.
Underneath those two visible changes sit several smaller ones worth noting for backend and graphics work. The Qt 6.12 beta adds client-side request compression for Qt GRPC, indirect rendering support for QRhi, and Vulkan VK_EXT_device_fault support for QRhi, alongside general core improvements, as listed in the Phoronix release summary. None of these are marquee features on their own, but together they describe a release that is finishing loose ends in the Qt6 graphics and networking stack rather than opening a new front.
What the release does not answer is the part that matters most for planning. Qt 6.12 is described as the planned last Qt6 LTS for commercial customers, and the 22 September 2026 target is the only date on the calendar from this announcement, per Phoronix. Qt 7 timing, migration tooling, and any licensing or pricing changes that might accompany the next major line are not addressed in the materials currently available, and a responsible read is to treat those as open questions for the next Qt Company communication rather than as gaps to fill by inference.