Apple has just released iPhone 3.0 Beta 5 to developers, a scant week-and-a-day after Beta 4. Previously Beta 2 and Beta 3 had been arriving every second Tuesday like clockwork, so was is this a sign of acceleration pre-WWDC, important fixes that needed pushing out faster, or just an early surprise for developers anxious to keep up to date?

Update: amrusch2 in our forums points out this "early" release could be in anticipation of the OS X 10.5.7 Leopard update rumored to be on track for this Friday. Compatibility update perhaps?

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(Via shutter in our forums)