For your big postbit? I am. So for the next 3 weeks, activity will only reflect 2 weeks instead of 4. This means that anyone 7 days away or less will achieve 100% for 28 days 2 weeks sooner than they previously would have. Also, you get the big postbit while you're at 100% untill you lock it in with the 28 days.
Pretty much, if you post for 2 weeks straight starting sometime in the next week, you'll be at 100% activity at the end of those 2 weeks. Then the system will go back to reflecting the past month rather than the past 2 weeks. I don't see why though.