I don’t know what your title was before you edited, but the main thing I think you need now is punctuation. The words are just jumbled together and a little difficult to parse without reading a couple times. I’d just add a couple words to clarify, quotes, capitalization, and commas mostly:
Talks have started about “28 Years Later”, a third installment to the “28 Days/Weeks” movies.
I don’t know what your title was before you edited, but the main thing I think you need now is punctuation. The words are just jumbled together and a little difficult to parse without reading a couple times. I’d just add a couple words to clarify, quotes, capitalization, and commas mostly:
Talks have started about “28 Years Later”, a third installment to the “28 Days/Weeks” movies.