ソース
http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/37.0/
Firefox ? Beta Notes (37.0beta) ? Mozilla
https://www.mozilla.org/en-US/firefox/37.0beta/releasenotes/
What’s New
New Heartbeat user rating system - your feedback about Firefox
New Bing search now uses HTTPS for secure searching
New preferences implementation enabled for the first half of the beta cycle
New Improved protection against site impersonation via OneCRL centralized certificate revocation
New Opportunistically encrypt HTTP traffic where the server supports HTTP/2 AltSvc
Changed Disabled insecure TLS version fallback for site security
Changed Extended SSL error reporting for reporting non-certificate errors
Changed TLS False Start optimization now requires a cipher suite using AEAD construction
Changed Added support for e-mail name constraints in certificates
Changed Improved certificate and TLS communication security by removing support for DSA
HTML5 Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube (Windows only)
HTML5 Added support for CSS display:contents
HTML5 IndexedDB now accessible from worker threads
HTML5 WebSocket now available in Web Workers
Developer Debug tabs opened in Chrome Desktop, Chrome for Android, and Safari for iOS
Developer New Inspector animations panel to control element animations
Developer New Security Panel included in Network Panel
Developer Debugger panel support for chrome:// and about:// URIs
Developer Added logging of weak ciphers to the web console