The Pokémon GO Adventure Week: Taken Over event is rolling out in Asia Pacific regions. The event will run from 00:00 August 8th through 23:59 August 12, and during the event, players will be able to encounter various of Pokemon.
Serebii has just announced this on their official X profile. If you want to find more details which are currently still in the process of being revealed, than you can find them below (thanks to Serebii.com):
Event Effects
| Effect | Type |
| Team GO Rocket Balloons | Every 2 Hours |
| Shadow Pokémon Move – Frustration | Removable with Charged TM |
New Shadow Pokémon In Event
| No. | Name | Type |
| #0488 | Cresselia |  |
| #0532 | Timburr |  |
| #0533 | Gurdurr | |
| #0534 | Conkeldurr | |
| #0564 | Tirtouga |   |
| #0565 | Carracosta | |
| #0566 | Archen |  |
| #0567 | Archeops | |
Event Specific Raid Battles
| No. | Name | Type | Rank | Max. CP At Capture | ||||
| #0179 | Mareep |  |
Shadow ☆ |
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| #0194 | Wooper |  |
Shadow ☆ |
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| #0408 | Cranidos | |
Shadow ☆ |
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| #0410 | Shieldon |  |
Shadow ☆ |
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| #0274 | Nuzleaf |   |
Shadow ☆☆☆ |
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| #0310 | Manectric | |
Shadow ☆☆☆ |
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| #0329 | Vibrava |  |
Shadow ☆☆☆ |
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| #0249 | Lugia |
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Shadow ☆☆☆☆☆ |
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Event Exclusive Field Research
| Task | Reward | ||||
| Defeat 1 Team GO Rocket Grunts |
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| Purify 3 Shadow Pokémon |
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Special Research Introduced in Event
| Adventure Week: Taken Over | ||||||||
| 1 / 5 | ||||||||
| Catch 15 Pokémon |
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| Purify 2 Shadow Pokémon |
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| Defeat 3 Team GO Rocket Grunts |
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| 2 / 5 | ||||||||
| Catch 20 Pokémon |
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| Purify 5 Pokémon |
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| Defeat 6 Team GO Rocket Grunts |
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| 3 / 5 | ||||||||
| Defeat Team GO Rocket Leader Arlo |
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| Defeat Team GO Rocket Leader Cliff |
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| Defeat Team GO Rocket Leader Sierra |
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| 4 / 5 | ||||||||
| Find the Team GO Rocket Boss |
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| Battle the Team GO Rocket Boss |
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| Defeat the Team GO Rocket Boss |
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| 5 / 5 | ||||||||
| Claim Reward |
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| Claim Reward |
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| Claim Reward |
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Event Team GO Rocket Encounters
Arlo |
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| Trainer | Name | Pokémon 1 | Pokémon 2 | Pokémon 3 | |
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Arlo |  Anorith |
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| Obtainable Shadow Pokémon | ||
| No. | Name | Type |
| #0347 | Anorith |
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Sierra |
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| Trainer | Name | Pokémon 1 | Pokémon 2 | Pokémon 3 | |
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Sierra |  Carvanha |
 Sableye |
 Houndoom |
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| Obtainable Shadow Pokémon | ||
| No. | Name | Type |
| #0318 | Carvanha |
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Cliff |
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| Trainer | Name | Pokémon 1 | Pokémon 2 | Pokémon 3 | |
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Cliff |  Lileep |
 Kingdra |
 Tyranitar |
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| Obtainable Shadow Pokémon | ||
| No. | Name | Type |
| #0345 | Lileep |
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Giovanni |
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| Trainer | Name | Pokémon 1 | Pokémon 2 | Pokémon 3 | |
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Giovanni |  Persian |
 Kangaskhan  Honchkrow |
 Cresselia |
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| Obtainable Shadow Pokémon | ||
| No. | Name | Type |
| #0488 | Cresselia |
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