Keep calm. Drink two thirds of a pint. Carry on.

Your favourite pub or bar may or may not use them. They're not mandatory.

The price of beer poured into them may or may not be proportionate compared to a pint. That already happens with the pint/half differential (and with thirds at many CAMRA festivals).

It may prove useful for decanting 330ml bottles into. Mine certainly is (and was, about thirty seconds after the above photo was taken).

It may prove attractive to licensees and punters alike who fancy serving and drinking higher-ABV beers in smaller measures. Even at a price premium.

It's been on the cards for ages - I've lost count about how many times I've pulled a blog post about this in and out of draft. It's been waiting its turn on the legislative merry-go-round.

It's a two-thirds-pint glass. It's not a revolution, it's not the downfall of the pint, it's not a Brewdog coup.

Put some beer in one and carry on. Or don't. It's only a glass.