Ladies & Gentlemen
We have reached the 1000 team mark.
These are teams registered openly for events (so not including MI-except for the single odd team 66 apparently playing alone in Northville

)
That’s 4 days earlier than the last two years and almost half the teams that played last year.
(Although, to be a fair comparison with last year it's more like 3 days earlier, since 35 WA teams would have to be subtracted.)
The graph compares 2011 to past years back to 2007. (Ignore the dates at the bottom. They are normalized across the years to match up the graphs for comparison.)
For events:
MAR team 1168 got pulled back from Chesapeake.
For MAR it looks like a little less than half the NJ teams aren't signed up yet, and a quarter of eastern PA teams haven't yet registered. All of DE (2) have registered.
All MAR events have single-digit initial openings remaining.
Other single-digit Regionals remaining are:
(4) Boilermaker
(6) Silicon Valley
(9) SBPLI
67 rookies total, so 6.7% of the registered teams.
There's a slew of Montreal rookies.