It's a little hard to make such a statement without some examples, but it's quite likely they're pulling stuff from the FCC database, Since that database also contains proposed frequencies, you could guess that some jurisdictions haven't made the switch yet, despite all this talk about being done in 'waves'.
Really, the freqs for rebanding aren't that hard to figure out. Just drop the original freqs by 15 Mhz, and in most cases, you'll have it. The more difficult part is the changes needed to scanners to make it work. In some cases, the older scanners won't handle it.
Keeping a close watch on your state's forum (and any scanner related mailing lists, such as those on Yahoo or QTH.net) is often the best way to find out when a particular jurisdiction is about to undergo rebanding. Those that have are often flagged in our database when members report it.
links editor, Utility Monitoring Central
HF Forum moderator, RadioReference
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