You can see those zones now, for free, on official servers.
www.eqmac.com
But I do not know what they have in store for P99 after Velious. I was talking about it last night in-game, and I hope they tune Velious harder than on Live. Most people will be 60 by the time Velious comes out, so there will really only be raiding and rare item hunting to do. But its a fine balance between catering to the end-game minded 60s and the lower level player base. Either way, Velious should have enough content that raid tiers should really start popping up. That should help some of the issues with the end-game scene at the moment, but it also may not (depending on how greedy people at the top want to be).