DxO announced that it will release a new version of the Nik Collection to be released in 2018:

Like you, we are passionate about photography and image quality. That’s why we view this opportunity with Nik as a commitment to ensure that you — that all of us who enjoy taking photos — are guaranteed to have the very best solutions at our disposal.
You’ll be happy to know that our developers are enthusiastically working on a new version of the Nik Collection to be released in 2018!

Darktable 2.4.0 has been released and for the first time it’s available for Windows users too. This is a major release and you might donwload it to try it out.

Macphun releases a new update for Luminar 2018 (Click here). All latest camera models are now supported and this is the improvements list:

WINDOWS USERS

• Work faster. Luminar can now launch more quickly.  Plus you’ll see a faster-editing performance and better RAM usage.
• Save Native files. Be sure to save your editing projects in the new native Luminar format.  This makes it easy to come back and edit later.
• Clone & Stamp released. Remove objects and blemishes with ease!
• LUT Mapping. Any LUT you’ve chosen can now be stored to a preset with no need to link to the original .cube file.
• More export control. You can choose to export to the Adobe RGB wide color profile or the ProPhoto RGB color space on export. You can also sharpen an exported file which is great for printing.
• Better masking controls. Users can adjust both the feather and density controls on a mask to refine the blending of layers. When editing a mask, a user can also press the X hotkey to toggle between Paint/Erase brush mode.
• More editing control. Now even more raw formats can be edited natively with our RAW Develop filter.  All filters also support advanced blending mode options as well.

MAC USERS

• Work faster. We’ve improved compatibility with OS X 10.10, 10.11 support. The Histogram also updates in real-time. Users will also enjoy Performance and RAM usage improvements. When editing press Cmd+L to quickly access the Filters list as well.
• RAW image improvements. Luminar does a better job of detecting noise in a raw file and automatically fixing it when you open to a photo.  DNG file support is also improved for easier editing. Plus even more raw formats can be edited natively with our RAW Develop filter.
• Improved workflow with other applications. We’ve addressed several small bugs reported when working with Adobe Photoshop, Adobe Photoshop Elements, Adobe Lightroom, and Photos for Mac.
• Better batch processing. A streamlined user interface makes batch processing even easier to fix multiple photos at once. Additional improvements also made to address user-reported issues.
• Improved Native files. Save your editing projects in the native Luminar format which makes it easy to come back and edit in the future. Plus files can be shared between Mac and Windows users.
• LUT Mapping. Any LUT you’ve chosen can now be stored to a preset with no need to link to the original .cube file.
• More plugin support. Luminar can also use Topaz plugins within the Luminar editing workflow.
• Improved exports. Photos can now be exported to SmugMug for online sharing.  The Sharpen on Export filter is also improved for crisper images.
• Better masking controls. Users can adjust the density controls on a mask to refine the blending of layers. When editing a mask, a user can also press the Backspace hotkey to reset gradient/radial mask drawing.

Don’t forget you get $10 off using our code “MIRROR” when buying Luminar 2018.