Draft changelog: weekly roundup for Aug 27

[mintlify]

Summary

Adds an Aug 27, 2026 changelog entry covering product changes shipped since the Aug 13 entry.

Changes

• New features: X Activity API filter qualifiers, broadcast.start/broadcast.end events, and the GET /2/usage/credits PPU credit balance endpoint
• Updates: is_subscriber field on broadcast.chat payloads, Pay-per-use monthly Post cap raised from 2M to 3M
• Docs-only merges (nav fixes, link fixes, customer directory) were excluded

Context

Sourced from PRs merged to xdevplatform/docs between Aug 13 and Aug 27, 2026 (#313, #324, #329, #340, #342).

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Project	Status	Preview	Updated (UTC)
x-corp	🟢 Ready	View Preview	Aug 27, 2026, 3:47 AM

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