Alex Garland, whose film '28 Days Later' made him even more famous in the horror movie genre and which made spectacle (you may know him from the movie 'Ex Machina'), redefining some zombie and horror aspects in the genre, said he may be on a path to "inventing" a continuation of the story about what happened after the first movie's sequel, '28 Weeks Later'.
This is what Garland had to say to 'The Playlist':
Sequels are generally done in a rush. It’s done with a sense of urgency. The first movie, you spend a long time developing to get it over the line. The second thing, you don’t. Your expectations are different and your motivations are different.
This makes the new sequel a more organic one. Next,
Don’t you think those are, in a way, better? Because there is no momentum now, and you’ve had an organic, real spark about where I can take this. And it just popped into your head, kind of thing. Rather than, ‘Okay, I’m going to make a sequel.’
followed by the origin of the concept:
About two years ago, Danny [Boyle] started collaborating on the potential to make Trainspotting 2, another sequel. In that conversation, an idea for ’28 Months’ arrived. I had a sort of weird idea that popped into my head. Partly because of a trip I’d taken. I had this thought, and I suggested it to Andrew and Danny, but I also said I don’t want to work on it. I don’t really want to play a role, and Andrew said, ‘Leave it to me.’ So he’s gone off and is working on it.
"Andrew" here refers to Andrew McDonald, a partner of Garland's who has been working with him for years, including such projects as 'Dredd', 'Ex Machina' and the two previous '28 ... Later' movies. Also, Danny Boyle said he may be interested in the movie production eventually, but most of the comments made were from some time ago.
In the end, there is a good chance we might see the new '28 ... Later' sequel, possibly with another crew, but hey, who knows?