Update status.mdx

Signed-off-by: tcaldwell-x <tcaldwell@twitter.com>

Author: tcaldwell-x

status.mdx

@@ -25,6 +25,9 @@ keywords: ["status", "API status", "system status", "uptime", "service status",
 
 ### March 2026
 <Steps>
+<Step title="Service outage: Timeline API endpoints" icon="circle-exclamation">
+Incident is ongoing. | **March 31, 20:45 UTC - Current**
+</Step>
 <Step title="Missing entitites.annotations" icon="circle-exclamation">
 Incident is ongoing. | **March 24, 02:00 UTC - Current**
 </Step>