Yep they are on the PTR, patch 4.01 will include all the class redesigns so 31 point talent trees, Holy power for paladins, focus for hunters and so on. Soul Shards so far have little use in PvE though some utility (instant summons, speed increase after teleport) in certain situations. Quite exciting really.
My Paladin’s Squire has his pony which completes the crusader look. The bank\vendor\mail an added bonus though the 4 hour cooldown seems a bit high to me.
ETA: 4.01 is now available on the background downloader, it’s getting close…