I apologize for the delay in responding, and thank you for posting. Thanks for sharing the news about Xpress Pro HD 5.2, HDV support was a big step for independent editors at the time.
Today Avid Media Composer, including a free version called Media Composer First, handles almost every camera format, and HDV has given way to file-based formats like XAVC and ProRes. Learning Avid is still valuable, since it remains a standard on feature films and television. If you have questions about current editing workflows, our Editing & Post-production forum is a great place to ask.