There's no replacement planned for film.tsv right now. You can get the current list of film IDs from the RDF dump like this:
zgrep $'\ttype\.object\.type\tfilm\.film' freebase-rdf.gz
Then when you need to update the list you query the MQL Read API for a list of new films that have been added since your last update:
[{
"type": "/film/film",
"id": null,
"name": null,
"timestamp": null,
"timestamp>=": "2013-12",
"sort": "-timestamp"
}]
Since the API returns 200 results at a time you'll need to use a cursor to get the full list of results.