We expect it to be downloadable from our website the first workday after PLS.But as this will be the first public release we would advise you to test it carefully before using it in a real production.
The PLS is from Wednesday 10th of April to Saturday the 13th. So first workday will be Monday the 15th
No, all the functions of the "normal" edition are included in the Pro.Only exception is the supported hardwareEDIT:Forgot about one thing, the Pro version has no stack list's