DRAFT RELEASE NOTES

All platforms

tailscale debug daemon-logs
tailscale version now advertises when you're on the unstable (dev) track
tailscale version --json for JSON output mode
--json output for tailscale lock status and tailscale lock log commands.
Handle cases where a node expires and we don't receive an update about it from the control server (#6929 and #6937).
tailscale status --json now includes KeyExpiry time and Expired boolean.
Support UPnP port mapping of gateway devices where they are deployed as a highly available pair (#6946).
Support arbitrary IP protocols like EOIP and GRE (#6423).
Fix exit node handling of a large number of SplitDNS domains (#6875).
Accept DNS-over-TCP responses up to 4KBytes.
Unix platforms: when /etc/resolv.conf needs to be overwritten for lack of options, a comment in the file now links to https://tailscale.com/s/resolvconf-overwrite
Tailscale SSH: ssh to tailscaled as a non-root user now works again, as long as you only ssh to the same user that tailscaled is running as

Improved throughput performance on Linux (#6663). More details in this blog post.
Add build support for Loongnix CPU architecture.

Tailscale actions (connect, disconnect, switch profile, use exit node) are available in the Shortcuts app.
Fixed Tailscale traffic looping (#5156) upon certain sleep/resume/wifi change transitions.

Tailscale actions (connect, disconnect, use exit node) are available in the Shortcuts app.
Fixed Tailscale using cellular data even after Wi-Fi becomes available (#6565).

New version of the Gio UI library with internationalization, accessibility fixes.
Allow Sonos app to discover local devices while Tailscale is connected.