From The Document Foundation Wiki
- significant latency reduction work (Tamás Zolnai, Collabora)
- track client's visible area in WSD
- push tile changes avoiding round-trip invalidate / re-render
- manage network usage and tiles in flight
- reduce unnecessary animation (Ashod Nakashian, Collabora)
- avoid repeated re-layout of comments & red-lines (Michael Meeks, Collabora)
- improved, custom pre-initialization hooks (Michael Meeks, Collabora)
- significantly smaller and simplified chroot jails (Michael Meeks, Collabora)
- avoid loading l10n framework for very short lived pages (Andras Timar, Collabora)