Rainbow Six Siege Y6S4 High Calibre: Release Times, Patch Sizes, and more

Sadnan Nafis
By Sadnan Nafis
3 Min Read
Image: Ubisoft

Rainbow Six Siege‘s latest Y6S4 ‘High Calibre’ is officially releasing tomorrow on all platforms, and it is bringing some exciting changes to the game.

The last season of this year is introducing Rainbow Six Siege’s 62nd operator ‘Thorn,’ who is bringing an explosive trap gadget called the ‘Razorbloom Shell’, alongside a new SMG called ‘UZK50GI‘.

Ubisoft has just confirmed that Siege’s Y6S4 High Calibre season will indeed be deployed tomorrow, November 30th.

R6S Y6S4 High Calibre Release Times

The Y6S4 Patch will be deployed at 14:00 UTC for PC, which includes Steam, Ubisoft Connect, Stadia, and Amazon Luna. For Xbox and Playstation users, the update will drop at 15:00 and 16:00 UTC respectively. The servers will go down for an hour for the patch to be deployed.

Patch Sizes

  • Steam: 4.8 GB
  • Ubisoft Connect: 5.36 GB
  • Xbox One/ Series X: 4 GB
  • PS4/PS5: 4 GB

New Defender: Thorn

This image has an empty alt attribute; its file name is Thorn-loadout-1024x576.jpg
Image: Ubisoft
  • Medium speed Operator from the Irish Garda
  • Gadget: Razorbloom Shell x2
    • Thrown gadget that sticks to surfaces
    • Proximity-activated explosive trap (short delay between activation and explosion)
    • Lethality similar to frag grenades
    • Can be shot out or exploded, even during detonation sequence
    • Countered by Thatcher, Twitch, IQ, Zero
  • Primary weapons: New UZK.50GI submachine gun & M870 shotgun
    • New submachine gun packs considerable destructive abilities
  • Secondary weapons: C75 Auto & 1911 TACOPS
  • Secondary gadgets: Barbed Wire & Deployable Shield


Outback has received a variety of updates to improve balancing and player comfort. Both the main building and its exterior have been modified to allow Attackers to create and execute more effective strategies. As well, new exterior soft walls have been added to the building, and some areas have been refurbished and cleaned up to remove junk and provide better lines of sight and balance.

A few new locations have been added to the map:

  • 1F Convenience Store, 1F Compressor Room, 1F Gear Store, and 1F Beer Fridge have been combined into 1F Bike Repair and 1F Mechanic Shop.
  • 2F Office Supply is larger and has an exterior soft wall.
  • 1F Restaurant has been split into two rooms: 1F Restaurant and 1F Shark.
  • 2F Covered Terrace is now an interior area that connects 2F Mezzanine and 2F Piano Room. The 2F Piano Room stairs have been removed.

Bomb sites have been moved:

  • The bombsites that were previously in 2F Dorms and 2F Laundry have been moved to 2F Laundry and 2F Piano Room.

Read Y6S4 Full Patch Notes here.

Sadnan Nafis is a Senior Esports Writer at GameRiv. Sadnan has a love-hate relationship with Rainbow Six Siege. He loves to keep himself updated with new tech videos and is always ready to help others.