Bad news: Say goodbye to upgrades. Good news: Say hello to less expensive software.
The argument is that most software will follow the iWork/iLife upgrade model (no upgrade pricing, but generally cheaper than alternatives). Although upgrades still exist for Pro apps like Final Cut and Logic Studio, but with the size of those installs I think they’ll remain on DVDs for the immediate future.
If there’s a bet on if Logic Express is on the Mac App store on Thursday…I wouldn’t wager one way or the other.