OmniFocus 3.1 adds localizations, a light sidebar option, and automatic theme switching in macOS Mojave.

• Localizations — OmniFocus is now localized in English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, and Spanish.
• macOS Mojave — Added a preference to automatically follow the system appearance to the Style Preference Pane.
• Sidebar — Added a light sidebar appearance. To use this appearance in the OmniFocus theme, uncheck “Always use dark sidebar” in OmniFocus Style Preferences.
• Forecast — Forecast now hides declined calendar events, and events in the past. Clean Up removes events that are still the Forecast outline but are now in the past due to passage of time.
• Columns — Fixed problems with the Columns layout and narrow windows.
• Copy/Paste — Fixed a problem where copying a parent task with child tasks selected would result in duplicate child tasks on paste.
• Crash — Fixed a crash in Quick Entry.
• Crash — Fixed a crash related to perspective settings.
• Crash — Fixed a sync-related crash.
• Dark Theme — General fixes to the dark theme.
• Help — Fixed a problem where the Help window presented in Full Screen when it shouldn’t have.
• High Sierra — Fixed a problem with the appearance of the View Options popover in Dark mode in High Sierra.
• Perspectives — Fixed a problem where a perspective would appear to be in a state with transient changes as soon as you clicked into a field.
• Perspectives — Fixed a problem where custom perspectives with certain filter rules would not update correctly when their contents changed.
• Perspectives — Fixed a problem where transient changes to a perspective would be saved on Quit and the perspective would never revert to its saved settings.
• Sidebar — Fixed problems with enabled states and appearances of the plus and gear buttons at the bottom of the sidebar.
• VoiceOver — Made several improvements to VoiceOver in OmniFocus.
• Smaller Fixes and Improvements — Including crash fixes.

• Add Link — This menu item now works in more situations when editing notes.
• Copy/Paste — Fixed a problem where you couldn’t copy a group header and any of its children.
• Crash — Fixed a crash during first run.
• Free Viewer Mode — Made several fixes to OmniFocus 3’s “Free Viewer” mode.
• Full Screen Mode — Prevented several auxiliary windows (like Software Update) from going into full screen mode.
• Inspector — Fixed problems in the repeat inspector.
• Performance — Improved performance when switching between perspective tabs.
• Quick Open — Fixed an incorrect dark separator between input field and list in Quick Open when using the OmniFocus theme.
• Tags — Fixed problems where Tags would appear unnecessarily “disambiguated” with their parent tags prepended.
• Smaller Fixes and Improvements — Including crash fixes.

OmniFocus 3 adds tags, advanced perspectives, more powerful repeat options, a new look and feel, and more:

• Tags — Contexts have been replaced with tags. You can assign multiple tags to any item. Just like with contexts, you can give tags a status of Active, On Hold, or Dropped to help you organize your tagged items.
• Custom Perspectives (PRO) — Perspectives created in OmniFocus 3 are built from filter rules and allow multiple tag selection, any/all/none groupings, and more. Once added, filter rules can be dragged to re-arrange. In addition to a custom icon, a custom tint color can now be chosen.
• Repeats — There are now many more options for repeats than in OmniFocus 2, and a new Inspector UI that makes finding the type of repeat you’re looking for easier. Day-of-week and day-of-month intervals are now available for all repeat types.
• Interleaved Forecast — Instead of siloing your calendar events within Forecast, they now appear as rows interleaved with your actions. You’ll get a better picture of exactly when in your day you should be getting things done.
• Forecast Tag (PRO) — In Forecast’s View Options, you can choose a tag to display in Today. In this section, you’ll see available items with your chosen tag. This opens up a lot of possibilities for important items that don’t have explicit dates, for daily rituals, and a lot more! We’ve added an item to the Edit menu for applying and removing your forecast tag to the selection and gave it a shortcut (control-command-L).
• Interface — We’ve updated the OmniFocus toolbar, sidebar, outline, and inspector to feel a little more at home in 2018. The single-line Columns layout is now the default, but the two-line Fluid layout is still available via Preferences.
• Touch Bar — Added common actions to the MacBook Pro Touch Bar.