Former Heroku employee. They just released streaming data connectors (https://blog.heroku.com/heroku-streaming-data-connectors) which is pretty cool.

They're maintaining the platform fine I'd say, which is quite a bit of work when you consider the frameworks and databases they offer.

As far as I am aware they had python 3 available a long time ago (long before the competition) and they have beta versions of some tools so you can test in advance.

It feels like Heroku has lost its market leadership. These days seems like Netlify is the winner.

Heroku pipelines are great and I believe they were added after the acquisition