Hate B? Thats reg ol Plane of Hate now, no such thing as Hate A as far as I know. This is where you go to get your Shrieking Ahlspeiss and your Book of Souls. There is a pretty good map to it here . New hate is a lot of fun IMO. The mobs have a very small aggro range, and if it weren't for the wanderers you could almost run everywhere uninvis. Some things you want to know: now that there are no first and second floor, everything is on the first floor, just in different regions. When you first zone up, on the same side of the bridge are all the 'easier' mobs. Crossing the bridge, if you stay within a couple buildings straight out, or go right or left from it, the mobs all stay generally easy. Getting closer to the cathedral, they start getting more difficult. The Deathrot knight is now level 65, Maestro is now supposedly a badass and *he will see your sos*. I'm not sure how to get to Inny, haven't poked around enough to discover that. Anyway, hope this info helps you a bit. Good luck, Hate b is a pretty fun zone.
maestro will kill you in about 2 seconds... his see-sos isn't that bad. He has his back facing to you. People panic and forget he can't "see" (hear) through sneak, so as long as you don't touch him or go in front you're safe.
I think that is like when you are in LDON and you do a /who it will say there is so many players in "The Sunken Library" but if you do a /who all it will claim you are in Takj or something. Same with some PoP zones, Tactics becomes "Drunder, Fortress of Zek." Just my guess though, like I said, I'm not familiar with how to get to Inny in the new zone, whether he's in a seperate zone off hateb, or if he is spawned through a cycle type event.