diff --git a/CHANGELOG.md b/CHANGELOG.md
index 680f0b76..24bd3cd7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,31 @@
 # CHANGELOG
 
-# v6.9.0 (2024-11-19)
+# v7.0.0 (TBD)
+
+- Drop explicit support for .NET 5.0
+- Add explicit support for .NET 9.0
+- Remove previously-marked obsolete parameter, functions and classes:
+    - `EasyPost.Models.API.DeliveryDateForZipPairEstimate.EasyPostTimeInTransitData` property (use `EasyPost.Models.API.DeliveryDateForZipPairEstimate.TimeInTransitDetails` instead)
+    - `EasyPost.Models.API.Options.BillReceiverAccount` property (use `EasyPost.Models.API.Options.Payment` instead)
+    - `EasyPost.Models.API.Options.BillReceiverPostalCode` property (use `EasyPost.Models.API.Options.Payment` instead)
+    - `EasyPost.Models.API.Options.BillThirdPartyAccount` property (use `EasyPost.Models.API.Options.Payment` instead)
+    - `EasyPost.Models.API.Options.BillThirdPartyCountry` property (use `EasyPost.Models.API.Options.Payment` instead)
+    - `EasyPost.Models.API.Options.BillThirdPartyPostalCode` property (use `EasyPost.Models.API.Options.Payment` instead)
+    - `EasyPost.Models.API.Rate.EstDeliveryDays` property (use `EasyPost.Models.API.Rate.DeliveryDays` instead)
+    - `EasyPost.Models.API.SmartRate.EstDeliveryDays` property (use `EasyPost.Models.API.SmartRate.DeliveryDays` instead)
+    - `EasyPost.Models.API.RateWithEstimatedDeliveryDate.EasyPostTimeInTransitData` property (use `EasyPost.Models.API.RateWithEstimatedDeliveryDate.TimeInTransitDetails` instead)
+    - `EasyPost.Models.API.RecommendShipDateForShipmentResult.EasyPostTimeInTransitData` property (use `EasyPost.Models.API.RecommendShipDateForShipmentResult.TimeInTransitDetails` instead)
+    - `EasyPost.Models.API.ShipDateForZipPairRecommendation.EasyPostTimeInTransitData` property (use `EasyPost.Models.API.ShipDateForZipPairRecommendation.TimeInTransitDetails` instead)
+    - `EasyPost.Models.API.Tracker.TrackingUpdatedAt` property (use `EasyPost.Models.API.Tracker.UpdatedAt` instead)
+    - `EasyPost.Models.API.TimeInTransitDetails` class (use `EasyPost.Models.API.TimeInTransitDetailsForDeliveryDateEstimate` instead)
+    - `EasyPost.Parameters.Tracker.All.TrackingCode` property (use `EasyPost.Parameters.Tracker.All.TrackingCodes` instead)
+    - `EasyPost.Parameters.Tracker.CreateList` class (related function was removed in v6.8.0)
+    - `EasyPost.Constants.CarrierAccounts.FedExAccount` variable (use `EasyPost.Models.API.CarrierAccountType.FedEx` instead)
+    - `EasyPost.Constants.CarrierAccounts.UpsAccount` variable (use `EasyPost.Models.API.CarrierAccountType.Ups` instead)
+- Add missing `CheckDeliveryAddress` parameter for `Claim.Create` parameter set
+- Handle enums when running parameter interdependency checks
+
+# v6.9.0 (2024-11-22)
 
 - Add missing `CheckDeliveryAddress` parameter for `Claim.Create` parameter set
 - Handle enums when running parameter interdependency checks
diff --git a/UPGRADE_GUIDE.md b/UPGRADE_GUIDE.md
index eaa4a68e..41c04ac1 100644
--- a/UPGRADE_GUIDE.md
+++ b/UPGRADE_GUIDE.md
@@ -2,11 +2,14 @@
 
 Use the following guide to assist in the upgrade process of the `easypost-csharp` library between major versions.
 
+- [Upgrading from 6.x to 7.0](#upgrading-from-6x-to-70)
 - [Upgrading from 5.x to 6.0](#upgrading-from-5x-to-60)
 - [Upgrading from 4.x to 5.0](#upgrading-from-4x-to-50)
 - [Upgrading from 3.x to 4.x](#upgrading-from-3x-to-40)
 - [Upgrading from 2.x to 3.0](#upgrading-from-2x-to-30)
 
+## Upgrading from 6.x to 7.0
+
 ## Upgrading from 5.x to 6.0
 
 ### 6.0 High Impact Changes