There is a complete listing of the new features in the description on the app store. Copy/paste in Quicksheet and predictive text in Quickword are the features I have been waiting for! Combined with the absence of Documents To Go from Dataviz has me pulling the trigger on the $19.99 purchase of QuickOffice as soon as I am done typing this post.
The ability to edit DOCX & XLSX (2007 MS Office format) files is promised for the next upgrade, as is access to iPhone email attachments.
It looks like the developers of Quickoffice suite have been busy.