Microsoft releases business central 2021 Wave 2 (BC 19) on 1st October 2021 .

This version is available on

1. Cloud
2. On Docker
3. On Premise

To check I tried to create new sandbox on cloud environment and it is readily available on my region too,.

Apart from this to get more detail and understanding on new version Microsoft already scheduled a launch event with breakout session .You can register here Business Central Launch Event

For On premise version you can download from following link

Business central On-Premise Version Download

New Version for AL language also available to update.

Stay turned for more updates and keep exploring..