First of all, apologies we missed your question earlier.
I just wanted to leave a note here to confirm that the src tag content didn’t change as part of the change you mentioned so the path still contains /secure/attachment.
Hello @aorlov . Apologies for the delay in getting back to you.
We are planning to change this in the short-term to reflect the new APIs. We will release a change notice before this is rolled out but I’m interested to hear if you have any feedback. Will this have any negative impact on existing workflows?