Visual Studio 2015 Update 2 has been released, however it doesn't detail any methods of upgrading from Update 1 to Update 2 - and no updates are shown for it in the 'Extensions and Updates' dialog.
Does anybody know the correct method of upgrading from Update 1 to Update 2?
I suppose that they forgot to put it inside the updates, you can download it from their web https://www.visualstudio.com/en-us/news/vs2015-update2-vs.aspx
A little late, but it appears you can upgrade through VS now. This seemed to work for me: under Tools > Extensions & Updates...
A window will pop up and on the left hand panel click on Updates.
You should be able to find the update there; mine had the label Visual Studio 2015 Update 2
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://i.stack.imgur.com/aPcfZ.png', '推荐 冷血范 的文章《How to upgrade Visual Studio 2015 Update 1 to Upda》','https://www.manongdao.com/article-2150053.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}