Conversions API Parameter Builder integration. The server-side Event/ServerEvent can now auto-fill Conversions API parameters from the incoming HTTP request: call setRequestContext(request) (optionally with a Preference allowlist) and the SDK fills any empty fbc, fbp, event_source_url, and referrer_url fields at send time — plus client_ip_address and automatic PII normalization/hashing on PHP and NodeJS. Auto-fill is gated by Preference, never overwrites values you set, and is fully opt-in (no behavior change unless you call setRequestContext).
Full Changelog: 25.0.1...25.0.2