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Honkai: Star Rail Version 4.5 Is Live — Astropolis, Summeretto, Waveflair

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Maintenance is over. Version 4.5 sends the Express to Astropolis, an IPC resort city, and debuts summer variants of Robin and Aventurine. Phase 1 is live now. Phase 2 opens September 12. StarPatch has character pages, relic targets, and a refreshed Version 4.5 tier list.

What is live on August 26

Robin • Summeretto, a 5-star Wind Remembrance support, opens Phase 1 with a Hyacine rerun. Her kit banks ally attacks, heals, and shields into Vibes, then deploys Summer Songbirds and a Fever zone that ignores enemy DEF. Signature Light Cone Rise and Sing is on the companion banner. Login events include Gift of Odyssey — 10 Special Star Rail Passes over seven days.

  • Phase 1 (August 26–September 11): Robin • Summeretto + Hyacine rerun
  • Open the Summeretto build before farming the new Remembrance set
  • Redeem leftover August codes on /star-rail-codes after you log in

Phase 2: Aventurine • Waveflair on September 12

Aventurine • Waveflair is a 5-star Quantum Elation Main DPS. He is not on the Phase 1 banner. Bank jade if you want the Elation carry — his page is live so you can pre-farm Genius of Brilliant Stars, 160 SPD boots, and Quantum spheres before September 12. Ashveil reruns in the same half.

  • Phase 2 (September 12–September 29): Aventurine • Waveflair + Ashveil rerun
  • Version 4.5 is a 5-week patch — banner windows are shorter than usual
  • Waveflair does not replace original Aventurine as a sustain

What to farm first in Astropolis

Finish traces and Light Cones on one clear team before sinking Trailblaze Power into unproven relics. Remembrance players should target World-Remaking Deliverer and Amphoreus, The Eternal Land for Summeretto. Elation players can hold Power or finish Genius of Brilliant Stars until the new domain is worth the resin. Story first: To Roll the Stars in Astropolis, then the summer vacation chapter.

  • New events: Overdrive: Whirlwind Grand Prix and Minuscule Great Adventure
  • Check the 4.5 tier list before locking a first-half pull plan
  • Livestream codes from August 14 are expired — do not retry them

FAQ

Is Honkai: Star Rail Version 4.5 out?
Yes. Version 4.5 launched August 26, 2026 after maintenance. Americas servers opened the evening of August 25 local time.
Should I pull Robin • Summeretto or wait for Aventurine • Waveflair?
Pull Summeretto if you need a Remembrance enabler or DEF-ignore support now. Save for Waveflair if you want a Quantum Elation carry and can wait until September 12. Do not skip a missing sustain just to debut a summer unit.