Yep, I think it will be good for the environment. I also think it could be good for many people's work life balance.To be quite honest I hope that it becomes the new normal. My bro-in-law works pretty high up in the council and his department have all been told yesterday that they only need to show their faces one or two days a week (depending on level). Which I was surprised at to be honest.
No need for traffic jams and carnage anymore in a morning with everyone trying to get into the office for 9am.
Will have much of a positive effect elsewhere as well, most notably to mind the environment.
I know a few of my friends have got on well with it because they haven't had to spend 90 minutes on a train twice a day. In the morning they get a bit longer in bed and get to see the kids before they go to school and in the evening they're around for dinner and some playtime.