: You can also acquire the standard and its addendums through the GlobalSpec Standards Library . Key Technical Highlights
If you are still designing with Cat 5e or OM1 fiber, yes —you are technically non-compliant. If you are already using Cat 6A and OM4, the -E revision won’t force a rip-and-replace, but it gives you formal permission to use thinner 28 AWG patch cords and OM5 fiber for future 400G upgrades. ansi tia-568.1-e pdf
Better alignment with the generic cabling standards of TIA-568.0. : You can also acquire the standard and