Feat: manage expectations for how frequently updated to support new aws cli actions

[FireballDWF]

Checks

• I could not find an existing setting that solved my issue
• I searched the discussions in this repo and there are no duplicates of my feature request

Feature Details

Document/manage expectations for how frequently users should expect updates and/or delays from when aws cli supports new services/actions to when cw will support completions for those new services/actions

Description:

Please include a detailed description of the feature (and an image or screen recording, if applicable)