E 100, T110E5 and IS-4 HUGE BUFFS in World of Tanks!
IS-4 got buffed? Lol, yup. - Heavy Tanks - World of Tanks official forum
World of Tanks & Murazor about IS-4 Branch Changes - MMOWG.net
World of Tanks Supertest - T-10 and IS-3 buffs - MMOWG.net
IS-4 - Global wiki. Wargaming.net
▻ IS-7 vs IS-4, Which is The Best? - World of Tanks IS-4 & IS-7 Gameplay
Buff IS-4 - Feedback / Suggestions - World of Tanks official forum
iS4 Instagram posts (photos and videos) - Picuki.com
E-100, IS-4, E5 BUFFS INCOMMING?! - World of Tanks
Tanks Reforged: Balance Updates to the IS-4 Line! - World of Tanks Console
World of Tanks - World of Tanks updated their cover photo.
S T ] Heavy tank rebalances! - Wargaming Community Feedback Requests - World of Tanks official forum
IS-4 - Global wiki. Wargaming.net
Weak Spots Guide IS-4
BUFFED 121 - World of Tanks
World of Tanks Supertest - IS-4 E-100 and T110E5 - new parameters - buff - MMOWG.net
The IS-4; the Biggest Nobody of Tier Ten - Game Guides and Tutorials - World of Tanks official forum
How 7.1 changes the IS-6's effective armor profile : r/WorldOfTanksBlitz
Buffs for Chinese tanks incoming. : r/WorldofTanks
Once WG removes the 113, I think they're gonna buff it stupidly so it becomes the new meta. Oddly enough,I don't think anyone would be surprised. : r/WorldofTanks
Japanese Superheavies in Supertest – Status Report
World of Tanks Supertest - IS-4 E-100 and T110E5 - new parameters - buff - MMOWG.net
Supertest: 4 Premium Medium Tanks Rebalanced - The Armored Patrol