Still, if the quality is consistently good, most fans are probably willing to bear with Moffat and the cast of Sherlock if it eventually leads to future episodes.
The downside is that it may be years before a season 5 materializes, if the three plus year gap between season 3 and 4 is any indication.
Sherlock season 4 premieres January 1, 2017 with “The Six Thatchers” on BBC.
Again, though, Martin did not altogether rule out the possibility of more.