Next Level Heated Tobacco.
Nobody can accuse Heat not Burn pioneer Philip Morris International, manufacturer of the market-leading IQOS, of standing still. Since 2016, there have been several iterations of the leading heated tobacco device with various modifications, ranging from the subtle upgrades to the internals to a significant design change.
Furthermore, many independent manufacturers have looked at other ways of heating tobacco though, for the most part, utilising HEETS from PMI. Several manufacturers looked at using traditional cigarettes instead of HEETS. But, for most, they stuck to what works well. Using a spike or a blade to heat the tobacco from the inside out.