When Seiya faces Titan, the last 1st Class Pallasite, he receives Athena's cosmo and the Sagittarius cloth evolves into Sagittarius New Gold Cloth!
When the feelings of Kouga and the others unite and rise together, reaching the ultimate power, the cloths become Omega Cloths!
Leo looks great
Omega Dragon has the strongest shield AND also the strongest lance.
Haruto now can fly too, and the cloths in general seem to boost the power of each one of their elements to the strongest level.