From a business perspective, this means they will not be investing in innovation on the platform anymore. Instead, they will focus their efforts on maintaining the current operations and keeping the lights on.
From a business perspective the have brought it out to the field with a shotgun.
As opposed to the relentless innovation they have demonstrated in the past 5+ years? /s
Heroku has been running in this mode for a long time. The only difference is they made it official.