What are the new and key features of Aurora HDR?

Here is the list of new & improved features of Aurora HDR 2018:

• NEW: Windows version.
• NEW: Lens Correction tool (available for Mac, coming soon for PC).
• NEW: Dodge & Burn Filter. 
• NEW: Transform Tool (available for Mac, coming soon for PC).
• NEW: Tone-mapping technology with reduced noise, improved realism of initial results and faster performance.
• NEW: HDR Enhance Filter.
• NEW: History Panel.
• NEW: Image Flip & Rotate (available for Mac, coming soon for PC).
• NEW: Touch Bar support for Macbook Pro.
• NEW: Redesigned-from-scratch User Interface.
• NEW: Macphun plug-ins. 
• IMPROVED: faster RAW image processing.
• IMPROVED: faster merging.
• IMPROVED: faster masking performance.
• IMPROVED: RAW file handling (reveals more details in shadows/highlights, displays colors more accurately and reduces noise).
• IMPROVED: Added Difference, Substract and Hue Blend modes for Layers and Textures.
• IMPROVED: Custom Texture in any layer can now be a RAW file.
• IMPROVED: Color Temperature.
• IMPROVED: Crop tool. More crop proportions, plus the Ability to Set Custom Aspect Ratio & Crop Presets (for Facebook, for example).
• IMPROVED: Image Radiance. More accurate with details & colors.
• IMPROVED: HDR Structure Algorithm. More accurate with details & colors.
• IMPROVED: HDR Details Boost tool.
• IMPROVED: Sharpen on export.

You can find out more here.