Ubuntu 18.04 Bionic Beaver（开发分支）当前是否已稳定？

Hey there! To answer your question directly: Ubuntu 18.04 Bionic Beaver is fully stable now, as it launched its official stable LTS (Long-Term Support) release on April 26th.

The development branch went through a structured series of milestones to reach this stable state, and here's a clear recap of the timeline you shared:

• November 30th: Feature Definition Freeze (finalizing all planned features for the release)
• January 4th: Alpha 1 release (initial early-stage testing build)
• February 1st: Alpha 2 release (further iteration of early testing builds)
• March 1st: Feature Freeze (no new major features added from this point; focus shifts entirely to bug fixing)
• March 8th: First beta release (more polished build for wider community testing)
• April 5th: Final beta release (near-stable build, last major testing phase before stability)
• April 19th: Final Freeze (only critical bug fixes are allowed; code is locked down to ensure stability)
• April 26th: Stable Ubuntu 18.04 LTS release (official production-ready stable build)

After the April 26th stable launch, the development branch transitioned to the stable channel. It now receives regular security patches and maintenance updates instead of active feature development.

内容的提问来源于stack exchange，提问作者Ali Sabri Sır