it's a little of both: on the one hand we're working on CI integrations (through generic webhooks or CI-engine-specific adapters that basically implement the CI engine's API [1]), so you can keep on using your existing CI solution. On the other hand, yes, there is also work towards a new CI engine (Ambient [2]), which aims to make it safe and secure to run CI on other people's code, which is important when working towards a distributed, community-ran, CI system. We should have more docs regarding the CI story up on radicle.dev in the next week or two.

[1] - https://radicle.network/nodes/index.radicle.garden/rad%3Az3G... , [2] - https://ambient.liw.fi/