diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8afc0de61..abd9ef15b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Change Log for SD.Next
 
-## Update for 2024-05-13
+## Update for 2024-05-15
 
 - **Features**:
   - **ModernUI** preview of the new [ModernUI](https://github.com/BinaryQuantumSoul/sdnext-modernui)  
diff --git a/TODO.md b/TODO.md
index 2edc7db6e..092e44fad 100644
--- a/TODO.md
+++ b/TODO.md
@@ -12,7 +12,7 @@ Requires `diffusers-0.28.0.dev0`:
 
 ## Dev Release Notes
 
-New [SD.Next](https://github.com/vladmandic/automatic) release has been baking in `dev` for a longer than usual, but changes are massive - over 270 commits...
+New [SD.Next](https://github.com/vladmandic/automatic) release has been baking in `dev` for a longer than usual, but changes are massive - over 280 commits...
 
 Starting with the new UI - yup, this version ships with a *preview* of the new [ModernUI](https://github.com/BinaryQuantumSoul/sdnext-modernui)  
 For details on how to enable and use it, see [Home](https://github.com/BinaryQuantumSoul/sdnext-modernui) and [WiKi](https://github.com/vladmandic/automatic/wiki/Themes)  
@@ -59,12 +59,8 @@ For more details see: [Changelog](https://github.com/vladmandic/automatic/blob/d
 
 ## Future Candidates
 
-### Models & Pipelines
-
-- stable diffusion 3.0
-
-### Features
-
+- stable diffusion 3.0: unreleased
+- boxdiff <https://github.com/huggingface/diffusers/pull/7947>
 - animatediff-sdxl <https://github.com/huggingface/diffusers/pull/6721>
 - async lowvram: <https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/14855>
 - fp8: <https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/14031>
diff --git a/extensions-builtin/sdnext-modernui b/extensions-builtin/sdnext-modernui
index 57c3f1923..8d8e3c4ec 160000
--- a/extensions-builtin/sdnext-modernui
+++ b/extensions-builtin/sdnext-modernui
@@ -1 +1 @@
-Subproject commit 57c3f1923068248b8a8496d99539c7869cecb7fc
+Subproject commit 8d8e3c4ecdaa0269598bce02b0dec580f777f75f
diff --git a/modules/shared.py b/modules/shared.py
index f749b4d93..f7944b5b5 100644
--- a/modules/shared.py
+++ b/modules/shared.py
@@ -520,7 +520,7 @@ options_templates.update(options_section(('diffusers', "Diffusers Settings"), {
     "diffusers_generator_device": OptionInfo("GPU", "Generator device", gr.Radio, {"choices": ["GPU", "CPU", "Unset"]}),
     "diffusers_model_cpu_offload": OptionInfo(cmd_opts.medvram, "Model CPU offload (--medvram)"),
     "diffusers_seq_cpu_offload": OptionInfo(cmd_opts.lowvram, "Sequential CPU offload (--lowvram)"),
-    "diffusers_vae_upcast": OptionInfo("false", "VAE upcasting", gr.Radio, {"choices": ['default', 'true', 'false']}),
+    "diffusers_vae_upcast": OptionInfo("default", "VAE upcasting", gr.Radio, {"choices": ['default', 'true', 'false']}),
     "diffusers_vae_slicing": OptionInfo(True, "VAE slicing"),
     "diffusers_vae_tiling": OptionInfo(cmd_opts.lowvram or cmd_opts.medvram, "VAE tiling"),
     "diffusers_model_load_variant": OptionInfo("default", "Preferred Model variant", gr.Radio, {"choices": ['default', 'fp32', 'fp16']}),
diff --git a/modules/shared_items.py b/modules/shared_items.py
index bdd0336d4..25ed4ae78 100644
--- a/modules/shared_items.py
+++ b/modules/shared_items.py
@@ -62,10 +62,8 @@ def get_pipelines():
         'Stable Diffusion XL Img2Img': getattr(diffusers, 'StableDiffusionXLImg2ImgPipeline', None),
         'Stable Diffusion XL Inpaint': getattr(diffusers, 'StableDiffusionXLInpaintPipeline', None),
         'Stable Diffusion XL Instruct': getattr(diffusers, 'StableDiffusionXLInstructPix2PixPipeline', None),
-        'Stable Cascade': getattr(diffusers, 'StableCascadeCombinedPipeline', None),
         'Latent Consistency Model': getattr(diffusers, 'LatentConsistencyModelPipeline', None),
         'PixArt-Alpha': getattr(diffusers, 'PixArtAlphaPipeline', None),
-        'PixArt-Sigma': getattr(diffusers, 'PixArtSigmaPipeline', None),
         'UniDiffuser': getattr(diffusers, 'UniDiffuserPipeline', None),
         'Wuerstchen': getattr(diffusers, 'WuerstchenCombinedPipeline', None),
         'Kandinsky 2.1': getattr(diffusers, 'KandinskyPipeline', None),
@@ -87,6 +85,12 @@ def get_pipelines():
         }
         pipelines.update(onnx_pipelines)
 
+    # items that may rely on diffusers dev version
+    if hasattr(diffusers, 'StableCascadeCombinedPipeline'):
+        pipelines['Stable Cascade'] = getattr(diffusers, 'StableCascadeCombinedPipeline', None)
+    if hasattr(diffusers, 'PixArtSigmaPipeline'):
+        pipelines['PixArt-Sigma'] = getattr(diffusers, 'PixArtSigmaPipeline', None)
+
     for k, v in pipelines.items():
         if k != 'Autodetect' and v is None:
             log.error(f'Not available: pipeline={k} diffusers={diffusers.__version__} path={diffusers.__file__}')