Note that Symlinks have always been disabled in Magento as admin YES/NO options default to 'no'. The update now explicitly disables symlinks in config.xml and as an extra precaution also removes it from the admin->developer section.
Users using modman to manage Magento 1.x modules should ensure that they do not disable symlinks as this will disable the modman modules.
Here is the diff file for magento1933 and magento1932 to assist with identifying changes in the default theme which may affect your custom/extended themes.
diff -r magento1933 magento1932 > https://pastebin.com/ADzMBLhr