diff --git a/content/calculated-data/_index.md b/content/calculated-data/_index.md
index 571e71191..fdc4feae3 100644
--- a/content/calculated-data/_index.md
+++ b/content/calculated-data/_index.md
@@ -4,3 +4,6 @@ published = true
 weight = 40
 +++
 
+ResInsight offers a built-in calculators for both summary curves and grid parameters. These expressions can be stored to text files for later use.
+
+Other more specialized calculations are also available, such as fault distance, geomechanical results, and calculation of statistics for grid cell values.
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diff --git a/content/calculated-data/grid-property-calculations/AggregationOfGridCellValues.md b/content/calculated-data/grid-property-calculations/AggregationOfGridCellValues.md
index 2132b4ed5..c0ca6a86e 100644
--- a/content/calculated-data/grid-property-calculations/AggregationOfGridCellValues.md
+++ b/content/calculated-data/grid-property-calculations/AggregationOfGridCellValues.md
@@ -9,10 +9,11 @@ weight = 30
 **Workflow description**
 
 - Import an ensemble of grid models with identical IJK into a **Grid Case Group**.
-- Create a view on one of the source grid models, and create a cell filter.
+- Create a view on one of the source grid models, and create a cell filter for the region of interest.
 - Create an expression for mobile oil `MOBILE_OIL := if(((SOIL-SOWCR) < 0.00), 0.00, PORV*(SOIL-SOWCR))`
-- Optionally select a subset of time steps
-- Create an expression to sum values for all visible cells `SUM_MOBILE_OIL := sum(MOBILE_OIL)` Use the result from the previous calculation as input to the variable, use `MOBILE_OIL` from the **Generated** category.
+- Select a subset of time steps. This will significantly affect performance for for large grids with many time steps.
+- Create an expression to aggregate values for all visible cells `SUM_MOBILE_OIL := sum(MOBILE_OIL)` Use the result from the previous calculation as input to the variable, use `MOBILE_OIL` from the **Generated** category.
+- Make sure **Apply to All Cases** is checked.
 - The individual values for each realization and time step is displayed as text in **Messages**. The statistics for each time step is displayed at the bottom.
 
 
diff --git a/content/getting-started/download-and-install/_index.md b/content/getting-started/download-and-install/_index.md
index 2b6468a75..81cd406ae 100644
--- a/content/getting-started/download-and-install/_index.md
+++ b/content/getting-started/download-and-install/_index.md
@@ -22,6 +22,8 @@ ResInsight is under continuous development targeting two major releases per year
 For an overview of some of its new and exciting features, see the following: 
 
 
+- [ ResInsight 2024.03 ]({{< ref "releasenotes_2024_03.md" >}})
+
 - [ ResInsight 2023.12 ]({{< ref "releasenotes_2023_12.md" >}})
 
 - [ ResInsight 2023.10 ]({{< ref "releasenotes_2023_10.md" >}})
diff --git a/content/getting-started/whats-new/releasenotes_2024_03.md b/content/getting-started/whats-new/releasenotes_2024_03.md
new file mode 100644
index 000000000..4f7e4eb81
--- /dev/null
+++ b/content/getting-started/whats-new/releasenotes_2024_03.md
@@ -0,0 +1,43 @@
++++
+title = "What's New in 2024.03"
+published = true
+weight = 10
+hidden = true
++++
+
+## Grid Calculations
+
+- [Grid Property Calculations]({{< relref "gridpropertycalculator" >}}) perform better for multiple (large) grid models
+ 
+## Polygons
+- [Polygons]({{< relref "polygons" >}})  are now available as project objects, and a can be displayed in 3D views. A polygon can be used to define an intersection and polygon cell filters. Polygons can be imported from a file, or created from a selection of cells in the 3D view. Polygons can be exported to a file.
+- A polygon cell filter can now be configured to use a polyline to define intersected cells in addition to a closed polygon.
+
+## Performance Tools and Improvements
+- When working with multiple large grid models, it is possible to run into low memory issues. The memory consumption of ResInsight can be monitored using the new  [Memory Report Dialog]({{< relref "memorymanagement" >}}) . This will display the consumed memory for all cases in the project.
+
+TODO: Add memory management image
+
+- Avoid allocation of formations data if no formations are present
+- Added support for export of application log messages to file in addition to the **Messages Window**.
+
+TODO: Add preferences
+- 
+
+
+
+
+## Other improvements
+- Wrong unit conversion for field units made **Well Allocation Plot** unreadable [GitHub issue](https://github.com/OPM/ResInsight/issues/11231)
+- Improved plot names and ordering of **Flow Diagnostics Plots**
+- Improve curve legend names for calculated curves
+- Improve MSW and short valve well visualization [GitHub issue](https://github.com/OPM/ResInsight/issues/11109)
+- Fix windows tiling issue
+
+## Python API
+- Added completion export parameters and multi segment well options [GitHub issue](https://github.com/OPM/ResInsight/issues/10781)
+
+
+
+
+See [**Release Notes on GitHub**](https://github.com/OPM/ResInsight/releases/) for further details and information.
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