I downloaded it a few days ago (the day it was released, apparently). A bit confusing at first with the "new" layout and I've run into a few bugs/errors - but all in all it seems to be pretty good!
i downloaded it the 1st night,- i couldnt wait to try it, i have to admit though, im totally confused with all the options now!- so i kept R4 on until i understand the parameters a little better- but the way i think, that could be never- LOL
I have downloaded the manual and had a read... since I'm limited in downloads I'll wait till the final release to download the prog. Reading the manual it looks like some good new features.