For previous releases I was often only able to find them from the "See what's new" window that could be opened during the installation. I never found another way to access that information again once that window had been dismissed.
If anyone can find them I will add them to the release notes posts for VEGAS Effects and VEGAS Image.
New Vector Stroke effect for creating vector lines or patterns along paths.
New Freehand Path tool is perfect for creating open paths to use with the new stroke effects.
VEGAS Image :
Highlights:
Added a new clipping masks feature. This feature gives layers the ability to clip to other layers in order to define their visual boundaries. Perfect for masking layers using complex shapes or images.
Added a new lasso mask feature. This mask can be used to quickly draw a rough shape or loop around parts of your image.
Added a new magnetic lasso mask feature. This mask automatically snaps to the edges of items in the image to allow you quickly and precisely mask part of the image.