After Eternatus & 20% blade boost, 8 new raids are added pushing the % of soloable raids form 76.85% to 83.47% or 101 out of 121 total raids (let me know if I miscounted any). Below are the raids organized by tier & if mechanics are needed.

Unsoloable Raids (T5/T6):

Cobalion, Cresselia, Deoxys Defense, Deoxys Speed, Dialga Origin, Groudon, Kyogre, Lugia, Mega Latias, Mega Latios, Primal Groudon, Primal Kyogre, Regice, Regirock, Registeel, Suicune, Tapu Fini, Uxie, Zamazenta Crown (20)

New Soloable Raids:

• Dialga, Raikou, Mesprit, Regigigas, Latias, Palkia, Palkia-Origin, Reshiram (8)
  • Mechanics are needed for all but possibly Mesprit, Reshiram or Palkia(s)

Existing Soloable Raids (T4):

• All of them (39)

Existing Soloable Raids (T5):

• Mechanics Required:
  • Celesteela, Necrozma, Giratina Altered, Entei, Latios, Mewtwo, NDM, Solgaleo, Tapu Lele, Zamazenta, Zekrom, (11)
• Mechanics mostly not needed:
  • Articuno, Azelf, Blacephalon, Buzzwole, Deoxys, Deoxys Attack, Enamorus-I, Genesect, Giratina Origin, Guzzlord, Heatran, Ho-Oh, Hoopa Unbound, Kartana, Kyurem, Kyurem Black, Kyurem White, Landorus-I, Landorus-T, Lunala, Moltres, NDW, Nihilego, Pheromosa, Rayquaza, Regidrago, Regieleki, Stakataka, Tapu Bulu, Tapu Koko, Terrakion, Thundurus-I, Thundurus-T, Tornadus-I, Tornadus-T, Virizion, Xerneas, Xurkitree, Yveltal, Zapdos (40)
• Special Raids:
  • Zacian Crown, Zacian (2)

Existing Soloable Raids (T6):

• Mega Rayquaza (1)

Final Note:

All raids are pre-calculated withe combined assistance of Pokebattler, VOD evidence, the Rotation Calculator for refinement & pogo-raids community collaboration. The most up to date bestiary of VOD evidence & predicted solos are found here: Solo Raid Sheet. VODs are uploaded once the respective pokemon has been solo'd during the raid rotation. Submissions during the Self-Mega Boost Era sadly are not counted.

Game Master

Edit: We are unsure if the 20% boost will remain in effect only for the duration of the finale pass as for some reason people have still been able to redeem tasks; not claim points but actively redeem tasks. However, this is inconsistent w/ players who have completed their pass, since various other buffs have been deactiviated e.g: Premier ball catch rate buff, while the 20% boost remains active.

As of rn I'm assuming it's a quiet but permanent buff until the game master is updated tomorrow.

Edit: Non-legit" sources showing the buff has been reverted. As of 8/25 that is not correct!
Here is proof it's still live
Video and math evidence

Edit2: As of 8/26 9pm pst, Adventure effects has been reverted back to their original 10%/5% values.