Thanks to u/kero_0206 for sharing this in his recent post. The following updates are listed.

Official Announcement made at April 21, 2017 11: 08 (JST)

• /u/LemonEatingKowGaming Video Patch 1.09 Announcement/Talk-through

Stabilized Frame Rates

1. New added option for PS4 Pro users who were experiencing frame issues.
2. Additional setting shown on Option screen

Texts/Menu Screena

1. Subtitles and certain menu screens are enlarged.
2. Examples

Timed Quests Returning!

1. Along with the restart of Timed quest, ranking function is added. As a first reward, you can earn luxury weapons.
2. Official Leaderboards released for Timed Quests
3. Potential first Timed Quest monsters?

• (To those who may be wondering, yes, I'll be back on weekly guide writing, so no worries there!)

Regalia

1. In addition, a new car sticker is added to customize Regalia, and a new song is added to the music player.