@Josh, thank you for the update! This is great news 

This would be great for managing our expenses. for our projects, we include all PO#s and Invoice#s, dates, costs into a custom we use under Expenses tab. It makes logical sense to also post the copies of estimates, POs and Invoices there for reference.

We have to do it manually and its horribly time consuming. We run an hours report for that year, and a separate Expenses report for that year, then combine data in Excel

absolutely this would help us tremendously. We route documents for approval, so often there are comments and project updates being made at the document level. When searching for latest updates on a project, its cumbersome to have to dig through various documents to find out what the recent activity ...