As of August 1st, Canada began it's multi-stage introduction of requiring warning about the dangers of smoking on each individual cigarette. This is a first worldwide.
The program will roll out over the next year or so starting with king-size cigarettes then later on to regular size cigs. In addition to the new individual warnings, there will be new warnings on packs and in packs as well.
https://www.cbc.ca/news/health/cigarette-health-warnings-canada-1.6923654
I'm not clear how imported cigarettes will be handled. Haven't been able to find clarification on that. From some images I've seen, the short 2 or 3 word warnings are printed on the paper that surrounds the filter portion of the cigarettes. Not sure what is done with unfiltered cigarettes - do they even still sell unfiltered cigs? Wow! I'm so out of touch with the cigarette industry (I suppose that's a good thing?)