This just in from the TCA – CBS confirms that (SPOILER ALERT) the dome will come down at the end of Season 3, which, while seemingly signalling the end of the series from a narrative perspective, could also “open up a host of other story” for a potential fourth season.
In other words, the network has yet to make an official decision on the future of the sci-fi series, but Under The Dome Season 4 is, as it stands, a possibility. Watch this space…
"The dome is coming down at the end of this season, but that opens up a whole other host of storytelling" Nina Tassler says of #UndertheDome
— TV Guide Magazine (@TVGuideMagazine) August 10, 2015