On the "New releases" tab of CCES there is a new release:
Software Releases in July 2021
SHARC and Blackfin Linux Command-Line Tools - Rel 2.10.0.
Is this part of CCES for Linux or available as a separate download?
Yes.SHARC and Blackfin Linux Command-Line Tools is a part of CCES installation
The SHARC+ and Blackfin+ toolchains are available as an optional extra installation, through Help>Install New Software...
We recommend to refer chapter 7 "Installing SHARC+ and Blackfin+ Linux Command-Line Tools" from the below linked CCES installation guide for more details.
You can download and install the latest CCES version 2.10.0 on linux using below link.