Is function DateTimeNow() in >2026 no longer supported.... in favour of CurrentDateTime? ISO_8601 durations

From what I can see, the DateTimeNow functions are not being replaced in workspaces when upgraded, I have quite a few that rely on date calculations so I’m interested in this.  Either way they seem to work fine inside the workspace.    
The user parameter evaluating in Flow however is different, as it appears to only return literal strings and does not evaluate functions (anymore).  A scripted parameter can be used, the only downside is I haven’t found a way to have the scripted parameter populate the default date. What I’ve used in cases where I need the date populated (works in 2026) is to create a separate workspace webhook to generate the desired date and use the “Dynamic Parameter Configuration” option on the workspace app.  They even made an option generate the schema!  

1. Create a workspace which takes ISO date intervals as a user parameter I call it iso_period.  
2. Add an attribute manager to adjust today’s date by the $iso_period parameter.
3. Add a json templater, setting the values according to the schema generated by the “Dynamic Parameter Configuration”.  
4. Add a textfile writer (I suppose generic would work as well).  Set MIME type to application/json and provide a file name. 
5. Publish to Flow using streaming and test it. (should return the json in browser)
6. Create a webhook from workspace published in step 5 and copy the url.  
7. Go back to the flow app and enable Configuration Loading at Launch under Dynamic Parameter Configuration.  
8. Select URL as the Data Source and paste the webhook into the URL. 

Using this setup has allowed me to use the same webhook for multiple apps since I can just edit the iso_period query parameter in the configuration for each app.  For what it’s worth I’ve attached the workspace template used to generate the dates.