Zenith literally means 'the highest level/point'. It's a word in the English language (not sure why someone in an earlier post said it was a foreign word). I'm annoyed that they would refer to a relic as "Zenith" and then say... "Oh, just kidding! There is something better!" I was much happier with +1, +2, etc, if there were future upgrade paths because at least the naming structure made sense.

As far as HOW the weapon will be improved... will we get some sort of new ability? That would be cool, but I doubt it. They really streamlined stats in ARR (the relics in 1.0 were far more complicated as far as stats go), so I don't see them making them any more complicated than they already are besides an iLevel increase...

Now what about the appearance? I thought the glowy effect on most of the weapons was already a little over-the-top, but it is what it is. How can they change the appearance more? A reskin to an already existing model? More glows? Some sort of extra sparkle? I don't know, but I really don't foresee any way to really change the relics without augmenting the model in some way. I'm really sick of reskins... but maybe that's just my opinion because I see the way almost every summoner/scholar weapon besides the relics use the same model, just with reskinned colors. (Primals, Allagan, etc).