# Cyphal Specification v1.0 is released

**URL:** <https://forum.opencyphal.org/t/cyphal-specification-v1-0-is-released/2386>\
**Category:** General\
**Created:** [May 16, 2025, 6:34pm UTC](https://forum.opencyphal.org/t/cyphal-specification-v1-0-is-released/2386 "2025-05-16T18:34:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pavel.kirienko](https://forum.opencyphal.org/user_avatar/forum.opencyphal.org/pavel.kirienko/32/9_2.png) [@pavel.kirienko](https://forum.opencyphal.org/u/pavel.kirienko)\
**Post date:** [May 16, 2025, 6:34pm UTC](https://forum.opencyphal.org/t/cyphal-specification-v1-0-is-released/2386/1 "2025-05-16T18:34:51Z")

</div>

Eleven years since the original RFC was posted on the drones-discuss mailing list, the Cyphal specification has officially reached stability. Today, we release v1.0:

> **[Cyphal\_Specification.pdf](https://specification.opencyphal.org/Cyphal_Specification.pdf)**
>
> 795.34 KB

Some time ago Scott made a neat diagram positioning Cyphal relative to other technologies in this domain, which is appropriate to include here:

 ![image](https://forum.opencyphal.org/uploads/default/original/2X/2/28ebb1fd0836c3bbe64e1c55b1d76a69bfbb60e7.jpeg)

The work on the next release — v1.1 — is [already underway](https://forum.opencyphal.org/t/v1-1-roadmap-defined/2382). It is expected that v1.1 will include new features in the DSDL language, secure communication, named topics/RPC, and more.

We might also consider building a ROS RMW based on Cyphal — if anyone is interested in taking part in this effort, please get in touch through this forum.