On 9 août 2015, at 15:00, haskell-cafe-request@haskell.org wrote:

From: Will Yager <will.yager@gmail.com>
Subject: Re: [Haskell-cafe] an idea for modifiyng data/newtype syntax: use `::=` instead of `=`
Date: 9 août 2015 02:30:50 UTC+3
To: Hilco Wijbenga <hilco.wijbenga@gmail.com>
Cc: Haskell Cafe <haskell-cafe@haskell.org>, MigMit <miguelimo38@yandex.ru>

It is worth asking, then, if we should record these small aesthetic suggestions somewhere for consideration while designing the next major compatibility-breaking release of the Haskell specification (Haskell 2020 or what have you). 

+1

Alexey.