Just read it in the Gotham Gazette:
Lectrosonics Update
Lectrosonics Reblocked
Wireless frequencies are about to undergo some necessary shuffling,
due to the FCC auction of the spectrum above 700 mHz, which will take
effect February 2009. Lectrosonics is no exception, making Block 27,
28, and 29 no longer available except by special order in 2008 and
entirely unavailable thereafter.
To compensate, Lectro will be expanding the blocks available on the
lower end of the spectrum. Blocks 19 and 20, pending FCC approval,
will roll out first quarter 2008, with a possibility of further
expansion later. In addition, more products will be added using block
944.