RSN for conda package legacy labelling (#570)

* Add notice for conda package `legacy` labelling

* Update _notices/rsn0042.md

Co-authored-by: Bradley Dice <bdice@bradleydice.com>

* Use correct label command

* Update _notices/rsn0042.md

Co-authored-by: Bradley Dice <bdice@bradleydice.com>

* Remove blank line

* rename file

* address review comments

* Rename to RSN 44

* Update dates

* Small updates to fix RSN 42 status and formatting.

* Update notice status

---------

Co-authored-by: Bradley Dice <bdice@bradleydice.com>

Author: gforsyth

_notices/rsn0042.md

@@ -9,8 +9,8 @@ notice_id: 42 # should match notice number
 notice_pin: true # set to true to pin to notice page
 title: "RAPIDS 25.02 replaces CUDA 12.5 with CUDA 12.8 in our Docker Images"
 notice_author: RAPIDS Ops
-notice_status: yellow
-notice_status_color: yellow
+notice_status: "Completed"
+notice_status_color: green
 # 'notice_status' and 'notice_status_color' combinations:
 #   "Proposal" - "blue"
 #   "Completed" - "green"
@@ -26,7 +26,9 @@ notice_updated: 2025-02-03
 
 ## Overview
 
-RAPIDS is removing support for CUDA 12.5 Docker containers in Release `v25.02`, and will cease publishing CUDA 12.5 Docker containers before the `v25.02` release.  The CUDA 12.5 containers will be replaced by CUDA 12.8 containers.  We are continuing support for CUDA 11.8 and 12.0 containers.
+RAPIDS is removing support for CUDA 12.5 Docker containers in Release `v25.02`, and will cease publishing CUDA 12.5 Docker containers before the `v25.02` release.
+The CUDA 12.5 containers will be replaced by CUDA 12.8 containers.
+We are continuing support for CUDA 11.8 and 12.0 containers.
 
 ## Impact
 

_notices/rsn0044.md

@@ -0,0 +1,60 @@
+---
+layout: notice
+parent: RAPIDS Support Notices
+grand_parent: RAPIDS Notices
+nav_exclude: true
+notice_type: rsn
+# Update meta-data for notice
+notice_id: 44 # should match notice number
+notice_pin: true # set to true to pin to notice page
+
+title: "Moving older RAPIDS conda packages to a `legacy` label"
+notice_author: RAPIDS Ops
+notice_status: In Progress
+notice_status_color: yellow
+# 'notice_status' and 'notice_status_color' combinations:
+#   "Proposal" - "blue"
+#   "Completed" - "green"
+#   "Review" - "purple"
+#   "In Progress" - "yellow"
+#   "Closed" - "red"
+notice_topic: Platform Support Change
+notice_rapids_version: "<=v23.02"
+notice_created: 2025-04-09
+# 'notice_updated' should match 'notice_created' until an update is made
+notice_updated: 2025-04-09
+---
+
+## Overview
+
+RAPIDS will move certain older conda packages in the `rapidsai` conda channel
+under a new label: `legacy`. These packages will still be available by adding
+`-c rapidsai/label/legacy` to installation and search commands.
+
+By moving these packages out of the main portion of the channel, newer RAPIDS
+conda environments will be solvable with `channel_priority: strict`, speeding up
+environment solve times and providing stronger correctness guarantees.
+
+All RAPIDS conda install commands for RAPIDS versions `v23.04+` will continue to
+work without any user intervention.
+
+This change will occur concurrently with the release of RAPIDS `v25.04`.
+
+
+## Impact
+
+RAPIDS environments installed using `conda` or `mamba`, for environments older
+than RAPIDS `v23.04` will fail to install unless `-c rapidsai/label/legacy` is
+added to the installation command.
+
+e.g. if you are creating an environment like:
+
+```shell
+mamba create -n rapids-23.02 -c rapidsai -c conda-forge -c nvidia rapids=23.02 python=3.10 'cuda-version>=11.4,<=11.8'
+```
+
+you will need to instead run
+
+```shell
+mamba create -n rapids-23.02 -c rapidsai -c rapidsai/label/legacy -c conda-forge -c nvidia rapids=23.02 python=3.10 'cuda-version>=11.4,<=11.8'
+```