diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8b2ee48..1bf3a47 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -111,7 +111,7 @@ jobs:
             TARGET_PLATFORM: osx-arm64
     env:
       DISPLAY: ':0'
-      MICROMAMBA_VERSION: '1.5.6'
+      MICROMAMBA_VERSION: '1.5.8'
 
     steps:
       - uses: actions/checkout@v4
@@ -264,7 +264,7 @@ jobs:
         if: always()
         run: |
           conda activate "${{ env.install_dir }}"
-          pytest --pyargs rsciio --reruns 3
+          pytest --pyargs rsciio --reruns 3 -n 2
 
       - shell: bash -l {0}
         name: Test hyperspy
@@ -285,6 +285,7 @@ jobs:
         if: runner.os != 'linux' && always()
         run: |
           conda activate "${{ env.install_dir }}"
+          # test_image_contrast_tool not supported with agg backend
           pytest --pyargs hyperspy_gui_traitsui -k "not test_image_contrast_tool"
 
       - shell: bash -l {0}
@@ -349,10 +350,10 @@ jobs:
     needs: create_release_job
     runs-on: windows-latest
     env:
-      WP_URL: https://github.com/winpython/winpython/releases/download/7.0.20230928/Winpython64-3.11.5.0mkl.exe
-      WP_SHA256: 0b2037660064589dd73a58ac17f44d9e657cfc5fcea92cec9223185243a0a3bc
+      WP_URL: https://github.com/winpython/winpython/releases/download/7.1.20240203final/Winpython64-3.11.8.0.exe
+      WP_SHA256: 0fa1bad92e7287632ce6c32c263c694b109b714b5d12e56063b2cd4281a71f7c
       WP_EXE: winpython.exe
-      WP_DIR_NAME: WPy64-31150
+      WP_DIR_NAME: WPy64-31180
       #LIB_TO_INSTALL: abtem ase atomap exspy graphviz holospy hdf5plugin hyperspy[all] hyperspyui kikuchipy lumispy matplotlib-scalebar nglview particlespy py4dstem pymatgen pystackreg python-rapidjson pyxem scanning_drift_corr start_jupyter_cm
       LIB_TO_INSTALL: abtem ase atomap exspy graphviz holospy hdf5plugin hyperspy[all] hyperspyui lumispy matplotlib-scalebar nglview particlespy py4dstem pymatgen pystackreg python-rapidjson pyxem scanning_drift_corr start_jupyter_cm
 
@@ -379,9 +380,8 @@ jobs:
           where python
           where pip
           pip install ${{ env.LIB_TO_INSTALL }}
-          # lmfit version seems to be old
-          # numdifftools latest version has support for numpy 1.25
-          pip install --upgrade lmfit numdifftools
+          # workaround for imageio / pillow incompatiblity?
+          pip install --upgrade imageio
 
       - name: Pip list
         shell: cmd
@@ -452,28 +452,28 @@ jobs:
         shell: cmd
         run: |
           call "${{ env.WP_DIR_NAME }}\scripts\env.bat"
-          pytest --pyargs hyperspy --reruns 3 -n 4
+          pytest --pyargs hyperspy --reruns 3 -n 2
 
       - name: Run test RosettaSciIO
         if: always()
         shell: cmd
         run: |
           call "${{ env.WP_DIR_NAME }}\scripts\env.bat"
-          pytest --pyargs rsciio --reruns 3
+          pytest --pyargs rsciio --reruns 3 -n 2
 
       - name: Run test hyperspy_gui_ipywidgets
         if: always()
         shell: cmd
         run: |
           call "${{ env.WP_DIR_NAME }}\scripts\env.bat"
-          # test_spikes_removal_tool fails randomly, fixed in https://github.com/hyperspy/hyperspy_gui_ipywidgets/pull/51
-          pytest --pyargs hyperspy_gui_ipywidgets -k "not test_image_contrast_tool and not test_spikes_removal_tool"
+          pytest --pyargs hyperspy_gui_ipywidgets
 
-      - name: Run test hyperspy_gui_traitsui
+      - name: Run test hyperspy_gui_traitsui --reruns 3
         if: always()
         shell: cmd
         run: |
           call "${{ env.WP_DIR_NAME }}\scripts\env.bat"
+          # test_image_contrast_tool not supported with agg backend
           pytest --pyargs hyperspy_gui_traitsui -k "not test_image_contrast_tool"
 
       - name: Run test exspy
diff --git a/RELEASE_TEXT.md b/RELEASE_TEXT.md
index 42ba9c7..7d7b57c 100644
--- a/RELEASE_TEXT.md
+++ b/RELEASE_TEXT.md
@@ -1,20 +1,24 @@
-The HyperSpy bundle is similar to the [Miniforge](https://github.com/conda-forge/miniforge)/[Anaconda](https://docs.anaconda.com/anaconda/) distribution and uses the `conda` or `mamba` package manager.
+Download one of the installers in the `"Assets"` section.
 
-**[Installation instructions](https://hyperspy.org/hyperspy-bundle/install.html)**
+See below the information to select the most suitable installer for a given platform (`Windows`, `Linux` or `Mac`) and architecture / type (`AMD`, `Intel`, `Silicon`, `Portable`).
 
 ## Recommended: Anaconda-type distribution (Linux, MacOS and Windows)
 
-For Windows and Linux, there is the choice between two variants, which are optimised for Intel or AMD CPUs:
-- `Intel`: with the MKL library,
-- `AMD`: with the openblas library.
+The HyperSpy bundle is similar to the [Miniforge](https://github.com/conda-forge/miniforge)/[Anaconda](https://docs.anaconda.com/anaconda/) distribution and uses the `conda` or `mamba` package manager.
+
+**[Installation instructions](https://hyperspy.org/hyperspy-bundle/install.html)**
+
+For Windows and Linux, there is the choice between two variants:
+- `Intel`: optimised for Intel architecture (uses the MKL library),
+- `AMD`: optimised for AMD architecture (uses the openblas library).
 
 For Mac, there are also two variants available:
-- `Intel` for Mac computers with Intel CPU, with MKL library
+- `Intel` for Mac computers with Intel CPU, with the MKL library
 - `Silicon` for Mac computers with Apple Silicon (M1, M2, etc.) CPU, with the Accelerate library
 
 For included packages, [see documentation](https://hyperspy.org/hyperspy-bundle/index.html#included-software-and-libraries).
 
-This distribution is built using [constructor 3.6.0](https://github.com/conda/constructor).
+This distribution is built using [constructor 3.6.0](https://conda.github.io/constructor).
 
 ## Portable (Windows only)
 The portable distribution is based on the [WinPython](https://winpython.github.io) distribution and is a self-extracting archive. Running the installer will install the distribution in the current directory. Since the distribution is portable, it can be moved to any directory or run from an external drive.