Tech Republic: There is no set release date at this point. Until the developers get the file size below the Google limit, they are unable to predict a release. Until then, however, we'll just have to sit back and wait -- and hope this happens across the Google landscape.
Packages for the release of KDE SC 4.13.3 are available for Kubuntu 14.04LTS. You will recieve them from the regular update channel. Bugs in the packaging should be reported on Launchpad. Bugs in the software to KDE.