Apple released iTunes 11.1.2.31 yesterday and I just finished modifying and uploading them. The original installers can be found here and the switchless installers on the Custom Installers downloads page.
You can always read about the changes and modifications made to these installers.
On a side note, I have made some changes to the downloads to fix some reports that files of 0 kb were being served. If you encounter this issue again, please report it on the comments or use the contact form. Thanks!