Version 1.1 was released in August: https://github.com/icecc/icecream/releases/tag/1.1
Thank you for the bump request.
You can help the maintainer with further information:
Does a simple bump  work on your system?
Created attachment 513634 [details]
ebuild for icecream-1.1
Created attachment 514662 [details, diff]
git version ebuild for icecream
made separate init scripts for iceccd and scheduler.
Version 1.2 is out as well. I'll give a spin at using the ebuild here locally later to test it.
Created attachment 579588 [details]
Ebuild for icecream-1.2
We should also keep in mind to provide systemd units.
Created attachment 579590 [details]
icecream scheduler service unit-file
Proposal for the scheduler unit-file for systemd.
Created attachment 579594 [details]
icecream daemon service unit-file
Not perfect, but it gets the job done. Config maybe through wrapping the service?
1.3 has been released recently, which does not build if app-arch/zstd is not installed.
There is a nice EAPI 7 ebuild from bombo82 https://github.com/bombo82/bombo82-overlay/blob/master/sys-devel/icecream/icecream-1.3.1-r1.ebuild
He also took care of GLEP 81
Except for confd file addition, there it should be working fine. Or at least it does for me.
Update to 1.3.1 in https://github.com/gentoo/gentoo/pull/15975