Although the title could suggest otherwise, this is talking about a five-day working week with three days physically in-office.
> Here's what it looks like: Tech workers are beginning to go into the office midweek while working from home on Monday and Friday.
This is the direction our office is going in, except that we have some flexibility to choose which days we go in. They want there to be at least one day where everyone in the dept. is in the office.