OASC
Essentially it's the format same, some minor re-arrangements of procedures/timings etc.
There's now an Individual planning exercise, quite similar to the RCB planex (there's a practice one on the RCB website which infact used the same map!!), but it's no harder than the group exercise.
Really, speaking from experience(s), apart from reading (The Week, one a week stragely enough, The Econmist and flicking through the Torygraph website on a daily basis for the world headlines and opinion) there's only so much you can do. To a large extent you'v either got it or you havn't.