You can pick up your unit here
https://osee-tech.com/products/gostream-deck
OSEE made NDI into the Beta version for some.reviewers to test it. However it is not yet ready for release until the thorough test can be done. Pls stay tuned with OSEE.
The NDI functionality will be released through a FW update, and in addition you'll have to purchase a license to activate the NDI, which is sold separately.
AmazonUK Gostream deck：
https://www.amazon.co.uk/dp/B0CWLC1V8Z?ref=myi_title_dp&th=1