From Jasper Morris at Berry Brothers & Rudd
http://bbrblog.com/2016/05/06/burgundy-struck-frost-hail/

And from a merchant:
http://www.thomascalderselections.com/posts

Lots of good info, though with respect to the second link, Burgundy is not ahead of an average year, despite a relatively warm winter, because average temperatures were insufficient for growth in most of March and April – up until 1 week ago it was considered ‘average.’ Indeed, since then it has continued rather cool – I noted the first flowers about the 18th May 2 years ago – at this rate they may not open before the 18th of June! Which won’t be helpful for anyone thinking they might get crop from the newly moving ‘dormant buds…’