Guss you're imagining like SHOT Show or the ones loads of manufactures attend in Asia?
They were few and far between before Covid, can't imagine any are planned atm. Bear in mind most of the new tech comes out of the far east, so by the time it reaches our shores videos on it have been on YouTube for months and the hot products usually sell through UK retailers websites quickly anyway (see Tokyo Marui MK46), so there's little interest.