The release notes point to the MonoDevelop download page, which is
also linked at the top of every page on the MD site. On the download
page there are source tarballs, and under the "Packages" heading, a
link to the Mono download page, which always contains the latest
packages (Mono AND Monodevelop) for all for the distros for which we
ship packages.
The reason why there's no single simple link is that the packages need
to be different for every distro and OS.