Print Widget: Capabilities depending upon Server & Flex versions

Is there some place where the following might be found: a description or checklist of what the Print Widget (or any other component) can do depending upon the version of Flex and the version of ArcServer one is using?

I'm using ArcServer 10.0 and Flex Viewer App Builder 3.5. From the limited discussion in the Flex Viewer help - and from several threads on this forum: since I'm using Flex 3.5, I have the latest features for the PrintWidget; however, since I'm using ArcServer 10.0, not all those features are available to me. So...

Am I limited to WYSIWYG 'quick printing' until I move to ArcServer 10.1/10.2?

What Print Widget 3.5 functions can I use with ArcServer 10.0? For example, I modified the PrintWidget.xml to enforce a standard subtitle. That worked, as I expected it to. Then, I was trying to set the dpi at 300 (from the standard 96); as far as I can tell from the file size of sample output PDFs (using the Adobe PDF print writer), this setting was ignored (Flex printed the file without any error messages).

Thanks!!

Mike