On the website under "Download", you can scroll down and see a record of the past versions and their changes. However, this history is only up to 1.47. Perhaps an update is in order?
You mean this page:
http://www.efmer.eu/boinc/download.html (http://www.efmer.eu/boinc/download.html)Download
It is as updated as can be. Even the to be released version is on it. ;D