Hi,
While that's something we want implemented, it probably won't be in before beta. While you can search for addons using the search box and pull up its change log that way, there's no way to do it from the main screen directly. You could also right click on a given addon and choose the "More Info" button.
Post-beta there will be a functionality update to support this. Most likely what will happen is when you click on the addon, the details (including changelog) will be posted in the news panel shown in the bottom left.
__________________
たしかにひとつのじだいがおわるのお
ぼくはこのめでみたよ
だけどつぎがじぶんおばんだってことわ
しりたくなかったんだ
It's my turn next.
Shakespeare liked regexes too!
/(bb|[^b]{2})/
|