Mists of Pandaria Classic’s fifth phase lands on June 2, 2026, bringing Siege of Orgrimmar and the Timeless Isle. Blizzard confirmed the update in a forum post (Mists of Pandaria Classic: The Siege of Orgrimmar Update Arrives June 2). Blizzard Watch reports the raid itself opens globally on June 4 at 3:00 p.m. Pacific (6:00 p.m. Eastern), two days after the patch goes live.
If you’re planning your week: patch arrives after regular maintenance on June 2, with the raid opening June 4; Timeless Isle content starts with the patch date. That’s the short version—details and quick UI prep tips below.
What to expect in Phase 5
Siege of Orgrimmar launches June 4 at 3:00 p.m. Pacific, per Blizzard Watch. Their post also notes this tier ties into Wrathion’s Legendary Cloak finale; if you’ve kept up, you can pick up the last stretch at the Tavern in the Mists when Phase 5 begins.
Timeless Isle arrives with the patch on June 2. As outlined by Blizzard Watch, expect the Emperor Shaohao faction, Timeless Coins as a new currency, and multiple world bosses at the Celestial Court. Ordos remains gated behind completion of Wrathion’s Legendary Cloak, and Emperor Shaohao reputation comes from activity on the Isle (including Yaungol and world bosses). Coins can be spent at Isle vendors.
Transmog and Proving Grounds are part of the 5.5.4 patch according to Blizzard’s PTR notes (5.5.4 PTR Development Notes). The notes state the new Transmog system is available on PTR and call out Proving Grounds scenarios as part of the update.
Celestial Dungeons (Season 3) also appear in the PTR notes. Blizzard describes Kor’kron forces occupying MoP dungeons, new enemy buffs, and Celestial blessings for players—framing a seasonal remix of the dungeons for this patch cycle (PTR notes).
Note: Dates and features here are drawn from Blizzard’s forum announcement and PTR notes, with raid timing reported by Blizzard Watch. PTR details can change before they hit live servers.
UI prep tips for day one
Update your core raid tools before Thursday. Keep your boss mod and any Siege-specific WeakAuras current once authors push Phase 5 builds. If you use a UI pack, check for a Phase 5 profile to avoid conflicts with new spell IDs and encounter events.
For Timeless Isle, enable nameplate aura widgets and clear combat text so you can track short buffs, procs, and ground effects in the chaos. A simple coordinates display and a minimap button bar make rare hunting and vendor hopping less clumsy.
If you’re finishing the Legendary Cloak, add a saved equipment set for your “questing/Isle” loadout and bind it to a convenient key. Keep your chat timestamps and loot alerts visible—Timeless Coins and reputation gains disappear fast in spammy combat logs.
Planning to try Proving Grounds when they arrive? Use a lightweight unitframe layout with clear target-of-target and prominent interrupt/defensive cooldown icons. It helps you read the scenario pacing without UI clutter.
Finally, sanity-check your keybinds and action bars after the patch. Major updates can nudge bar paging and hidden binds; a 60-second spot check in a target dummy area can save a pull in Siege.