WordPress 3.5 is a major update with over 100 changes, improving functionality and fixing bugs—but some plugins may break. It's essential to fully back up your site (files and database) before upgrading to avoid potential issues. Some sites are already experiencing problems post-update, so proceed with caution. If you're unsure, we can handle updates and backups for you—either one-time or as part of a monthly service. Regular maintenance ensures your site stays secure, stable, and functional as WordPress and plugins continue to evolve. Reach out if you need help or have questions.