There are 11 remaining offers this year. While it's not possible to accurately predict what will be offered, here is my educated guess on the remaining offers for gold based on the past 6 years.
The number of new offers each year seems to be decreasing. Therefore, I anticipate no more than 6 new offers in 2021. So far, the SU-130PM is the first new offer seen in the 2021 advent calendar. We will likely see a few of the following common repeat offers:
- One Year of Premium
- AMX 13 57
- WZ-111 Alpine Tiger
- Lorraine 40 t
- Rheinmetall Skorpion G
There is also a visible pattern where the new offers for gold in one year are repeated in the next year. We have already seen the WZ-120-1G-FT, Lowe, STRV 81, and E 75 TS (all new offers in 2020). This leaves us with:
- STRV S1
- T-103
Common sense says that the Obj. 703 Version II will be an offer for gold this year, as each past year's final offer for cash is an offer for gold in following year. This theory also plays off the pattern listed above.
- Obj. 703 Version II
My guess as to which new offers will appear this year are:
- Object 274a – Recently offered for gold during the Daily Deals event last month.
- GSOR 1008 – Similar to why the E 75 TS was an offer last year.
- Bisonte C45 – Will likely be offered for cash this year, same as the Obj. 703 Version II was last year.
Asterisks indicates that it's the first time this tank has been offered in the advent calendar event.*
2021 (1 new offer so far):
Day 1: HWK 30
Day 2: Lowe
Day 3: leKpz M 41 90 mm
Day 4: TS-5
Day 5: ELC EVEN 90
Day 6: M6A2E1 Mutant
Day 7: Skoda T27
Day 8: WZ-120-1G-FT
Day 9: 50TP prototyp
Day 10: E 75 TS
Day 11: STRV 81
Day 12: Lansen C
Day 13: SU-130PM*
Day 14:
Day 15:
Day 16:
Day 17:
Day 18:
Day 19:
Day 20:
Day 21:
Day 22:
Day 23:
Day 24:
2020 (7 new offers):
Day 1: TS-5
Day 2: M48A2 Räumpanzer
Day 3: M6A2E1 Mutant
Day 4: WZ-120-1G-FT*
Day 5: T-103*
Day 6: STRV 81*
Day 7: M41D
Day 8: STG Guard
Day 9: Lowe*
Day 10: WZ-111 Alpine Tiger
Day 11: LT-432
Day 12: VK 75.01 (K)
Day 13: Strv S1*
Day 14: 50TP prototyp
Day 15: AMX 13 57
Day 16: E 75 TS*
Day 17: Lorraine 40 t
Day 18: Chrysler K
Day 19: One Year of Premium
Day 22: Centurion Mk. 5/1 RAAC
Day 21: Somua SM
Day 22: Rheinmetall Skorpion G
Day 23: ELC EVEN 90
Day 24: Obj. 703 Version II*
2019 (8 new offers):
Day 1: Turtle Mk. I*
Day 2: WZ-111 Alpine Tiger
Day 3: FV1066 Senlac*
Day 4: Kanonenjagdpanzer 105
Day 5: ELC EVEN 90
Day 6: Rheinmetall Skorpion G
Day 7: Centurion Mk. 5/1 RAAC
Day 8: Somua SM
Day 9: M48A2 Räumpanzer
Day 10: Chrysler K
Day 11: leKpz M 41 90 mm GF
Day 12: 50TP prototyp
Day 13: Škoda T 27*
Day 14: LT-432*
Day 15: T26E5
Day 16: AMX 13 57
Day 17: Lorraine 40 t
Day 18: Type 62
Day 19: Caernarvon Action X
Day 20: One Year of Premium
Day 21: Lansen C*
Day 22: TS-5*
Day 23: HWK 30*
Day 24: VK 75.01 (K)*
2018 (11 new offers):
Day 1: IS-2M*
Day 2: Lorraine 40 t
Day 3: Tiger 131
Day 4: Chrysler K*
Day 5: Type 62
Day 6: One Year of Premium
Day 7: Somua SM*
Day 8: WZ-111 Alpine Tiger
Day 9: ELC EVEN 90*
Day 10: Kanonenjagdpanzer 105*
Day 11: T25 Pilot Number 1*
Day 12: Rheinmetall Skorpion G
Day 13: 50TP prototyp*
Dat 14: M4A3E8 Thunderbolt VII
Day 15: ISU-122S
Day 16: VK 168.01 Mauerbrecher
Day 17: T26E5
Day 18: STG Guard
Day 19: M6A2E1 Mutant
Day 20: Progetto M35 mod. 46*
Day 21: T26E3 Eagle 7*
Day 22: Cromwell B
Day 23: Centurion Mk. 5/1 RAAC*
Day 24: Caernarvon Action X*
2017 (13 new offers):
Day 1: T92*
Day 2: M46 Patton KR
Day 3: One Year of Premium
Day 4: M4A3E8 Fury
Day 5: AMX M4 MLE. 49 Liberté*
Day 6: E 25
Day 7: M4A3E8 Thunderbolt VII*
Day 8: Tiger 131*
Day 9: Pz. 58 Mutz*
Day 10: Lorraine 40 t*
Day 11: T-44-100
Day 12: Primo Victoria*
Day 13: ISU-122S
Dat 14: WZ-111 Alpine Tiger*
Day 15: T-34-85 Rudy
Day 16: T26E5 Patriot*
Day 17: M6A2E1 Mutant*
Day 18: 8,8 cm Pak 43 Jagdtiger
Day 19: STG Guard*
Day 20: Cromwell B
Day 21: Rheinmetall Skorpion G
Day 22: 59-Patton
Day 23: leKpz M 41 90 mm GF*
Day 24: VK 168.01 Mauerbrecher*
2016 (11 new offers):
Day 1: Pz. III K*
Day 2: AC 4 Experimental*
Day 3: Type 62
Day 4: M46 Patton KR
Day 5: VK 45.03*
Day 6: One Year of Premium
Day 7: KV 220-2
Day 8: 59-Patton
Day 9: ISU-122S
Day 10: AMX 13 57GF
Day 11: KV-5
Day 12: M56 Scorpion
Day 13: 8,8 cm Pak 43 Jagdtiger
Dat 14: IS-3A
Day 15: T-44-100*
Day 16: IS-2 Berlin*
Day 17: E 25*
Day 18: Rheinmetall Skorpion G*
Day 19: Cromwell B
Day 20: M4A3E8 Fury*
Day 21: KV-122*
Day 22: M41 90 GF*
Day 23: T-34-85 Rudy
Day 24: Krupp-Steyr Waffentrager*
2015:
Day 1: T-28E F30
Day 2: Low Tier Bundle
Day 3: T-34-85 Rudy
Day 4: Type 62
Day 5: BT-SV
Day 6: 105 leFH18B2
Day 7: T34
Day 8: FV201 (A45)
Day 9: AMX CDC
Day 10: PZ II J
Day 11: KV-220-2
Day 12: Sexton I
Day 13: M56 Scorpion
Day 14: One Year of Premium (?)
Day 15: KV-5
Day 16: IS-2
Day 17: 59-Patton
Day 18: 8,8 cm Pak 43 Jagdtiger
Day 19: WZ-111 Alpine Tiger
Day 20: AMX 13 57
Day 21: IS-3A
Day 23: Cromwell B
Day 22: ISU-122S
Day 24: M46 Patton KR
Source: https://www.reddit.com/r/WorldofTanks/comments/rfnciy/2021_advent_calendar_prediction/