It is there on my win10 installation of Avast Free and it don’t really notice it having any cpu/ram issues. I believe it was trialled in the previous incarnation and probably in the beta. I’m in the UK and I don’t think it was trialled here before.
Mind you I don’t use my win10 laptop as frequently as my XP Pro desktop.
Well it’s back for me and I’ve noticed no issues also, so I would say it’s back and it’s here to stay, which from what was explained to me last time I asked about it, is a good thing. I just don’t like taking part in trials without opting in.