You must be referring to this post 
I’m guessing something didn’t pan out as it’s still not an option. 45HomeLab and I often have different expectations around “soon”, but this is getting up there at six months and counting. 
You can always email info@45homelab.com or call (866) 471-8188 to inquire about a full build with ECC. From what I understand, the Pro8 is geared towards MSP’s. It may have additional costs or markup baked into the price as a result.