This update from 3.14.16 to 3.16.0 fixes many bugs and brings a lot of new features[1][2].

• Ability to export temporal animation frames
• Added a new goto locator filter
• Add context menu to map canvas
• Many styling and labelling improvements
• Render axis for stacked bar diagram
• Many mesh datasets and layer improvements
• New features in rendering and 3D
• better print layout
• New features in expressions and digitizing
• and, and, and ...

[1] https://qgis.org/en/site/forusers/visualchangelog316/index.html
[2] https://github.com/qgis/QGIS/compare/final-3_14_16...final-3_16_0

What the port update should do:

• Integrate OpenCL functionality
• Update distversion, distinfo and pkg-plist

Tested on Poudriere (amd64 only; i386 not testable because of broken dependency multimedia/assimp).

'portlint -AC' founds no problems.