One of my favourite doctor who youtubers I follow is Joe Street, aka the Confused Adipose. Over the last few years he and many friends have created a film series called Echo:
https://www.youtube.com/playlist?list=PLPoD3b9i29MsuE4rd-vxo1apih_SSmbXd
Currently there are 3 hour-long episodes, and in the titles it says there will be 4, with the final one teased for Spring 2025 (in the UK), so sometime between March and June.
They are:
Echo’s End:
Echo’s Return:
Echo’s Destiny:
I haven’t finished watching them, but I searched this forum and didn’t find anyone talking about them, so I made this thread to let people here know about the films and discuss about them.