Will this be available for the open-source/self-hosted version? Would be awesome if this makes it there and we can self-host Timescale within AWS with S3 backing the storage of older data.

I use Timescale for internal analytics tools -- time-series metrics, logs, etc from hardware systems. Our deployments have very low CPU usage, so running on a single EC2 instance is feasible. Our main concern is always just running out of disk space. It would be amazing if this ends up being a config option in the open source version, where we can point the instance at an S3 bucket and provide the right IAM access.