Iﾕm assuming that youﾕre reading this because you have used a previous version of Ultima III ﾑ you can simply drag your ﾒRosterﾓ file from any older version of Ultima III into your Ultima III 1.3 folder to preserve your game(s)-in-progress. Running the patch to upgrade from 1.2 to 1.3 preserves your registration information.
Even if youﾕre familiar with a previous version of Ultima III, Iﾕd still suggest skimming through the ﾒRead Me Firstﾓ file for additional tidbits. What is listed here is just a summary of changes to Ultima III since version 1.2. The ﾒOption:ﾓ items listed below are accessible from the ﾒCustom Settingsﾉﾓ command in the ﾒOptionsﾓ menu.
ｰ Option: Save only when asked.
ｰ Option: Simple Automatic combat.
ｰ Option: Move diagonally.
ｰ Option: Ignore wind.
ｰ Option: Play sounds asynchronously.
ｰ Different map size support.
ｰ Party is now optionally resurrected when the last character dies.
ｰ Abort to Main Menu command added.
ｰ Easier character creation.
ｰ Detects when a font will conflict with the one built into Ultima III.
ｰ Detects when an old version of Speech Manager (<1.3) is in use.
ｰ Keeps the ctSeeds smashed (keeps graphics fast after update events).
ｰ Handles update events when peering at gems.
ｰ Handles updates better on low-res Macs.
ｰ Ztats shows the correct player icon again (broken in 1.2).
ｰ Allow use of numeric keypad for movement in dungeons.
ｰ Other small refinements too small and varied to mention.
