The Register seems to think that Apple will release Dual G4 servers at AppleExpo Paris:
Such a move would, of course, allow Jobs to unveil new hardware at the show without... well... announcing new hardware - if you see what we mean - as he promised in a press release a week or so back. That goes double if his lieutenant, marketing chief Phil Schiller, unveils the servers at Seybold a couple of days before on the 24th.