Yes we are planning for a demo but it will behave the same as demo mode in the current product. i.e no File save etc.
The ETA at the moment is approximately when we do the next release.
The PRV and other areas of the program are vastly improved compared to 8.5. Its more modern editing workflow compared to the old Win 3.1 style editing that 8.5 had :) And there are several new tools. However like learning anything you have to invest a some time learning how to use the new tools before you will be productive as before.
And you can do all you are describing and more with the smart tool once you learn the hit zones.
Please take a look at
this link describing the tools, and
this one that is specific to editing notes in the PRV with the smart tool.