Can I play new Free Fire modes on beta server?

I recently installed the latest astute beta server to see if new game modes are available before the official release. Some players say beta users get early access to experimental modes and limited-time events, but I’m not sure if everything unlocks automatically. Do new modes appear as soon as the beta update drops, or do we need special access or codes? Also, are these modes stable enough to play full matches without bugs? If anyone has already tried upcoming modes on the beta, how was the experience compared to the main version?