There are 57 blog days left before release, which still has to cover at minimum:
- 28 returning characters
- 7 new items
- 5 new pokemon
- 8 new assist trophies
- Ken and Incineroar

That is 50 entries, with 0 additional entries for returning stages. We can expect some extra entries for returning stages, because these returning stages have had entries: (besides BF and FD)
- Lylat Cruise
- Wily Castle
- Princess Peach's Castle
- Kongo Falls
- Summit
In other words, we are pretty much on-track with the Blog timeline for the content we expect.