QUOTE
You can be sure it will be upgradeable. In the meantime do as Michael advises in his essay. have everything with sidecar files or as dng and catalog in LR2 not LR3b.
I’m not sure I understand the sentence he writes:
QUOTE
The program only reads the files, never writes to them, and anything that it does with them is then either saved out to an XML sidecar file, or as a DNG copy, or saved in a Lightroom catalog file – never to the raw file itself.
It does write back to DNG of course. Is he suggesting that all DNG’s be copies prior to 3.0 usage? That is, LR3 isn’t going to do this for you, you’ll have to copy your library of DNG files and then import or am I missing something?
Further, I’d love to be sure it will be upgradable but I don’t know I’d bet the farm on that one.