A new version of Epson Scan 2 was released a few days ago (6.4.86).
However, the support for Digital ICE for V550 and V600 scanners is still missing.
They are providing users with SilverFast SE which has the iSRD (similar to Digital ICE), free of charge.
You can read more here:
https://epson.com/Support/Scanners/Perfection-Series/Epson-Perfection-V600-Photo/s/SPT_B11B198011
I asked the support if/when a version of Epson Scan 2 for macOS Catalina will support Digital ICE, but I’m still waiting for an answer, so I’ll write back as soon as they reply.