The libraries we maintain have been updated to default api.steemit.com instead of steemd.steemit.com, which will cover a lot of apps that don't set an endpoint and just use the default.

I just downloaded the latest version of the steem-python library and steempy, following the instructions from developers.steem.io (more or less... the instructions still leave plenty of room for improvement w.r.t. prerequisites...). Once running, when I typed "steempy" and saw the usage message, I was surprised to see that it still lists steemd.steemit.com as the default:

optional arguments:
  -h, --help            show this help message and exit
  --node NODE           URL for public Steem API (default:
                    "https://steemd.steemit.com")

This is on a brand new VM, so it's not some remnant from a previous install bleeding through. Just FYI in case it slipped through the cracks. Putting it here since I am not a github user.