According to a report in Decanter the Canadian province of Ontario will introduce an upper limit for how much an empty bottle of wine may weigh. Decanter refers to a letter written by the Liquor Control Board of Ontario (LCBO) that specifies an upper weight limit for bottles of 420 grams for wines retailing at CAD $ 15 or less.
More expensive wines will not have a strict upper limit but lighter bottles will be treated “favourably”. The decision is based on environmental considerations. decanter.com
This post is also available in: Swedish