We're pleased to announce the second release candidate for QuPath v0.6.0!

This is a preview version for testing. We plan to have the final release in October 2024.

If you try it out and find problems, please let us know via GitHub or the user forum.

There may be bugs!
Please don't use v0.6.0-rc2 for important work, and make sure you back up any projects that you open with it.
It is not recommended to switch between v0.5.x and v0.6.0-rcx for the same project.

Highlights

See v0.6.0-rc1 for information about the first release candidate.

The main changes in v0.6.0-rc2 are:

• Much improved OME-Zarr support
  • New File → Export images... → OME-Zarr command
  • Convert images to ome.zarr from the command line via convert-ome
  • Read and write metadata, such as pixel size and channel colors
  • Read remote OME-Zarr images
• The QuPath InstanSeg extension is now faster when detecting cells within large and complex regions of interest
• QuPath now uses DeepJavaLibrary v0.30.0, which supports PyTorch 2.4.0 by default
  • This is important if you want to add CUDA support on Windows or Linux - you'll need CUDA 12.4, or alternatively CUDA 12.1 with a launch script to request PyTorch 2.3.1

Note: Docs & other extensions (e.g. for StarDist) have not yet been updated for compatibility with this release candidate.
We plan to update them for the final release.

Note 2: For users of macOS Sequoia
Recent security changes in macOS Sequoia may block QuPath's installer.
This can be overcome through Apple Menu > System Settings > Privacy & Security - see this page from apple.com for details.
(We know it's annoying, but we don't currently have the means to make QuPath a 'signed' app to avoid this)

What to download

• For Windows (two options, functionally the same)
  • QuPath-v0.6.0-rc2-Windows.msi - if you want a standard Windows (local) installer
  • QuPath-v0.6.0-rc2-Windows.zip - unzip it and double-click QuPath-v0.6.0-rc2.exe (no further installation needed)
• For Mac (two options, depending upon processor)
  • QuPath-v0.6.0-rc2-Mac-x64.pkg - for Macs with Intel Processors or Apple Silicon (M1/M2)
  • QuPath-v0.6.0-rc2-Mac-arm64.pkg - for Macs using Apple Silicon. This runs faster & is recommended for most users, but lacks support for a small number of file formats through Bio-Formats (particularly .czi with jpeg-xr compression).
    • To install: right-click and choose Open to install.
• For Linux
  • QuPath-v0.6.0-rc2-Linux.tar.xz - use chmod u+x /path/to/QuPath/bin/QuPath to make the launcher executable.