There's some big changes you'll notice immediately, especially if you start taking extra damage and doing less. Back in the day, interface buttons typically would clear your actions. Spamming like you're on OSRS won't do you any good here!

Tanner and Vulpi from Lost City dev team have compiled some sources to show this off.
See: PR 1456 | PR 1458 for YouTube references.

Content Changes

Fixes

• Added Prince Ali option to the post-Crandor Ned dialogue chain.
• Fixed a few typo mistakes in dialogue with Duke Horacio, Sir Prysin, and Klarense.
• Aggression ranges for random events lowered.
• Random events no longer re-aggro on the player.
• Clear interaction when changing attack styles, run/walk, and toggling prayers.
• Changing game options and player controls will close interfaces and no longer queue when delayed.

Engine Changes

Features

• Optimized f2p/multi-zone storage to use less memory.
• Hiscores will update on logout now instead of a 30-min schedule - we at RS2 Rewind are still waiting for a patch to help us show a live preview of the hiscores, hopefully in the near future.

Fixes

• Locs and Objs are now tracked in a way that better mirrors RuneScape behavior.