Some of Delta is optional. Features are switched on per site, under Delta → Features.
The four features
| Feature | Does | State |
|---|---|---|
| Cloud Library | Browse and import licensed site packs | Stable, on by default |
| Coming Soon | Holds the public site behind a page you design | Stable, off by default |
| UI Editor | Visual chat and a live canvas for a page | Unstable, off by default |
| Soft Navigation | Swaps page content without a full reload | Unstable, off by default |
Cloud Library is enabled on a new site. The other three are off until you enable them.
Maturity
Each feature carries one of three labels.
Stable is finished. Unstable works, and its behaviour can change between releases. Experimental is early work; no feature currently uses it.
Enabled and active
A feature has two states. Enabled means the switch is on. Active means it is enabled and everything it needs is in place.
Coming Soon can be enabled and still inactive, because it also needs a published page to show. While it is inactive, the public site is not gated. The agent reports the reason a feature is inactive.
Coming Soon
The gate serves your chosen page with an HTTP 503. Search engines read that as temporarily unavailable and return later, so no placeholder is indexed. The page is marked no-index, and the response is not cached.
Login and wp-admin stay open. The bypass needs permission to edit theme options, so an administrator sees the real site and an editor sees the gate.
For developers
Maturity values are stable, unstable and experimental. An enabled but inactive feature reports an inactiveReason: feature_off, or missing_published_page for Coming Soon. The bypass capability is edit_theme_options, and the 503 carries Retry-After: 3600.