From Jack back in July:

"So about six weeks ago we find out that the LED's we want to use for
our GI Lights are like $6 each after sourcing them and promises of a
lower cost.....don't worry, they will be lower in quantity we are
told..... John makes a controller board (that's like a month or so out
of his life) and they work great - oops...the supplier can save us a
few pennies under $6 each and we need 30+ of them.....and it's ten
weeks + to get them all of a sudden. Bad communications on the
supplier side but who's in any type of time sensitive project anyway?

We quickly switch to the LED we are using in the feature lights...Joe
redesigns the redesign the bracket, John creates a new board for them
and Jim the method to show the light on the playfield and John has to
design another completely different driver board to control
everything...oh...Keith has to program to the different firmware and
driver board too....tidbit huh - so - we have those LED's in stock,
boards are being made, Keith has to take five steps forward and a few
backwards and we get what we want in spite of suppliers who are not
time and price sensitive....there's a tidbit for you. About another
thousand like that and a few that ended badly but we keep going, we
have an amazing team..... "

Also, Jack's mentioned that feature LEDs as seen at the shows are being driven to only 40% of their brightness capacity, but it also looks like they'll be using them to double as flashers. Last count was 150 RGB LEDs, but I think that's still in flux as word only a few weeks ago was that Joe was adding more lights in places (spotlights, another by the OZ lanes, etc.).