"most recent installment" is correct and usable in written English.
You can use it to refer to the current or most up-to-date version of something, like a movie or book series. For example, "The most recent installment of the Harry Potter franchise has been a box office success."
(The most recent installment, "42 Up," appeared in 1998).
(The most recent installment of the "X-Men" series was a notable exception).
Howe's book is the most recent installment in the prestigious Oxford History of the United States.
The eighth, and most recent, installment, "56 Up," was shown on British television last year, and is now running at the I.F.C. Center.
The company has received $13.4 billion so far from Treasury, and the most recent installment — $4 billion — was turned over to G.M. on Tuesday.
Mr. Manes noted that even Mr. King's most recent installment far outsold almost all electronic books published by the major publishers.
"In the first two videos he displays a measured calm, a kind of doped-out serenity that is missing from the most recent installments.
Games in the Final Fantasy series have grown longer with each entry, but the most recent installments are generally less memorable than the earlier, more succinct ones in terms of their narrative.
A repeat of CBS's "CSI: Miami" (11.5 million) still managed to lead the 10 p.m. hour, as ratings for ABC's "What About Brian" (6.2 million) and a Christmas-themed "Studio 60 on the Sunset Strip" on NBC (7.4 million) showed little change from their most recent installments.
Gadot is best known to audiences for the three most recent installments in the "Fast & Furious" franchise.
The two new 30-second spots are the most recent installments in the deodorant company's "Stress Test" campaign.
