docs: 3.0 upgrade guilde

Signed-off-by: Michael Crenshaw <[email protected]>

VERSION

@@ -1 +1 @@
-2.14.0
+3.0.0

docs/developer-guide/release-process-and-cadence.md

@@ -17,7 +17,7 @@ These are the upcoming releases dates:
 | v2.12   | Monday, Jun. 17, 2024 | Monday, Aug. 5, 2024 | [Ishita Sequeira](https://github.com/ishitasequeira)  | [Pavel Kostohrys](https://github.com/pasha-codefresh) | [checklist](https://github.com/argoproj/argo-cd/issues/19063) |
 | v2.13   | Monday, Sep. 16, 2024 | Monday, Nov. 4, 2024 | [Regina Voloshin](https://github.com/reggie-k)        | [Pavel Kostohrys](https://github.com/pasha-codefresh) | [checklist](https://github.com/argoproj/argo-cd/issues/19513) |
 | v2.14   | Monday, Dec. 16, 2024 | Monday, Feb. 3, 2025 | [Ryan Umstead](https://github.com/rumstead)           | [Pavel Kostohrys](https://github.com/pasha-codefresh) | [checklist](https://github.com/argoproj/argo-cd/issues/20869) |
-| v2.15   | Monday, Mar. 17, 2025 | Monday, May 5, 2025  |                                                       |                                                       |                                                               |
+| v3.0    | Monday, Mar. 17, 2025 | Monday, May 5, 2025  | [Michael Crenshaw](https://github.com/crenshaw-dev)   |                                                       |                                                               |
 
 Actual release dates might differ from the plan by a few days.
 

docs/operator-manual/upgrading/2.14-3.0.md

@@ -0,0 +1,12 @@
+# v2.14 to 3.0
+
+Argo CD 3.0 is meant to be a low-risk upgrade, containing some minor breaking changes. For each change, the next
+section will describe how to quickly determine if you are impacted, how to remediate the breaking change, and (if
+applicable) how to opt out of the change.
+
+Once 3.0 is released, no more 2.x minor versions will be released. We will continue to cut patch releases for the two
+most recent minor versions (so 2.14 until 3.2 is released, and 2.13 until 3.1 is released).
+
+## Breaking Changes
+
+So far no breaking changes have been merged. We will update this section as changes are merged.

docs/operator-manual/upgrading/overview.md

@@ -37,6 +37,7 @@ kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/<v
 
 <hr/>
 
+* [v2.14 to v3.0](./2.14-3.0.md)
 * [v2.12 to v2.13](./2.12-2.13.md)
 * [v2.11 to v2.12](./2.11-2.12.md)
 * [v2.10 to v2.11](./2.10-2.11.md)