Note: this is an expanded version of the post on linkerd.io with additional context and clarification, and an FAQ at the bottom.Today we're happy to announce the release of Linkerd 2.15, which adds support for mesh expansion, native sidecars, and SPIFFE identities, and introduces a new model for stable releases.The new "mesh expansion" feature in Linkerd 2.15 allows users to bring applications running on VMs, physical machines, and other non-Kubernetes locations into the mesh, delivering Linkerd...