It's all in N2 - the shelf above the North stand. I expect the ticket exchange will be used for this game so if you only want to be in the North then you should be able to get tickets if you hold on.
I think those may be the figures for WBA
For how-many-tickets-left obsessives (and I am not immune to this) the new website allows you to get a list of all blocks with remaining seats - just click into any block on the stadium map and a "see more areas" button appears. This gives a full list of...
Logged on at 9:15, entered queue, tickets bought at 9:50 - no problems. Ticket site is much better in that you can now see availability in all stands without having to click in to each section.