VideoGenReview

What each AI video model's release notes say changed

A user guide's document history is a changelog too

Amazon's Nova user guide ends with a document history table: each row a change to the guide, with a description and a date. One row, on 7 April 2025, records that Amazon Nova could now generate videos up to two minutes long, the same day the AWS News Blog introduced Nova Reel 1.1. From 3 source pages, read 2026-09-25; no maker pays to be listed.

Where this note's examples come fromThe examples in this note come from 5 entries across 2 model lines.ExamplesAmazon Nova Reel3 entriesGoogle Veo2 entries
Fig. 1 Each example links to its line page.

Pages like this are easy to miss because they sit at the back of the documentation rather than on a news page. They date what changed in the docs, which usually tracks what changed in the model, and the register counts them as release notes when a row names a change to the model.

Where both a post and a document history exist, both are kept: they rarely disagree on the day, and when they do, the difference is itself worth knowing.

The entries this note draws on, read 2026-09-25.
DateLineVersionWhat changed
7 April 2025Amazon Nova ReelNova Reel 1.1Nova Reel 1.1 improves quality and latency for 6-second single-shot clips over Nova Reel 1.0
7 April 2025Amazon Nova ReelNova Reel 1.1Multi-shot videos up to two minutes, in an automated mode from one prompt or a manual mode with a prompt per shot
7 April 2025Amazon Nova ReelNova Reel 1.1The user guide records video generation up to two minutes long
23 June 2025Google VeoVeo 2Veo 2 on Vertex AI takes a last frame as well as a first, or a video to extend
8 December 2025Google VeoVeo 3.1Veo 3.1 video extension reaches Vertex AI in preview

Inclusion rule. Entries used as examples in this note. Order. By date, oldest first; undated rows last.

1In the notes

Today, we introduce Amazon Nova Reel 1.1 , which provides quality and latency improvements in 6-second single-shot video generation, compared to Amazon Nova Reel 1.0.

AWS News Blog, Amazon Nova Reel 1.1

This update lets you generate multi-shot videos up to 2-minutes in length with consistent style across shots.

AWS News Blog, Amazon Nova Reel 1.1

Amazon Nova can now generate videos up to 2 minutes long.

AWS, Amazon Nova User Guide document history

In addition to a providing a first frame of a video, you can specify the last frame of a video or a video to extend in length.

Google Cloud, Vertex AI release notes

Veo 3.1 supports video extension in Preview.

Google Cloud, Vertex AI release notes

2A pipeline on current models

Release notes such as “A user guide's document history is a changelog too” matter once a pipeline runs the models; SceneMixer's guides describe how it does:

Usually ten to twenty minutes, depending on the tier and how busy the queue is.

SceneMixer, Generating a Segment: What Happens When You Press the Button — “How long does one segment take?” (read 2026-10-13)

The second trim replaces the first trimmed version; the generated clip stays in Version History.

SceneMixer, Trim a Clip: Cut the Start or the End Without Regenerating — “Can I trim the same clip twice?” (read 2026-10-13)

3Other reading notes

4Notes read