> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coreweave.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Release Notes for v1.15

> Release notes for Monolith platform v1.15: new features, improvements, and bug fixes.

* [New features](#new-features)
* [Improvements to existing features](#improvements-to-existing-features)
* [Bug fixes](#bug-fixes)

## New features

1. **Enable column concatenation in Quick Columns** *(v1.15.4)*. This option allows you to generate a new column that's created from concatenating multiple columns from the dataset (numerical and categorical). Separator can be defined by users (for example, " - "). For more information, see documentation [here](/monolith-ai/1814202325/Quick+Columns).

## Improvements to existing features

1. **Join Manipulator Enhancements** *(v1.15.1)*. Enhanced the Join Manipulator with additional functions including exclusive join operations. See documentation [here](/monolith-ai/1814202884/Join) for more details.
2. **Check of data consistency in Series Models** *(v1.15.4)*. This improvement ensures consistency of time series data when using the Series Models. If data is not consistent (for example, series of different length), a user-friendly message will be returned to the user.
3. **Improved UX when setting up Series Models** *(v1.15.4)*. This improvement ensures that users can't create configurations that would break the model. Columns available for selection will dynamically be updated based on other selections in the step. For example:
   1. The series unit cannot be selected as a curve input.
   2. A curve input cannot be selected as a curve output.
4. **Better readability of intelligent correlation plots** *(v1.15.4)*. This improvement adds the x and y values of a cell in the tooltip when hovering over the cell. This enables to easily track the column and row, especially in larger heatmaps.

## Bug fixes

1. **Multiple Output Dataset Export Fix** *(v1.15.0)*. Fixed a bug that resulted in the same dataset being exported both times from manipulators that output two datasets (for example, RecEval).
2. **Anomaly Detector Azure Fix** *(v1.15.1)*. Fixed Anomaly Detector bug for Azure where AD model wouldn't run without an ID column specified.
3. **App running Fix** *(v1.15.3)*. Fixed an issue where some scheduled apps weren't running.