This happens every week though.
The timing of episode availability is very irregular and sometimes Amazon forgets for days. It's extremely disappointing, considering we've purchased the show but are forced to torrent it anyway, week after week due to Amazon's shitty service.
Just look at the top five reviews for this season: https://www.amazon.com/Mr-Robot-Season-4/dp/B07X1V834N
Well, the first episode last week was commercial free on network TV. However, I think that was a one off and we didn't know until Esmail tweeted it a few hours before the show.
The only way to watch it ad free is through online services the next day:
iTunes: https://itunes.apple.com/us/tv-season/mr-robot-season-4/id1476331264
Amazon: https://www.amazon.com/The-Story-So-Far/dp/B07X1V834N
Vudu: https://www.vudu.com/content/movies/details/Mr-Robot-TV-Series-/714990
Google Play: https://play.google.com/store/tv/show/Mr_Robot?id=wbaMRCpqQxA&hl=en_US
It's released for free in the UK but in the US and elsewhere you'll have to pay to access episodes. I'm in the US and for me it's $2.99 for the first episode and $24.99 for the whole season.