This idea has been merged into another idea. To comment or vote on this idea, please visit CCI-I-206 Revamped Slack notifications for Workflows (2.0).
Improve Slack Notification to Include Live Status Merged
The Slack notifications should be displayed continuously as a single message that get's updated (See the demo in LambCI for example). Each of the main stages in CircleCI would update the existing message --- either adding an attachment [and/or] updating the current status.
This would be HUGE! Slack is a mission critical notification/collaboration platform. Better integration with the workflow would allow developers/engineers to continue workflow integrated with CircleCI from Slack without having to log in to CircleCI to see that current status because as soon as a commit triggers a CI build, it would post that initial message into the channel.
Circle CI Dev Note: This is easily possible. The PostMessage Slack API returns the message ID for which subsequent updates can be made to the existing message. That's really all that's needed.