Last week I mentioned the concern being expressed by some sections of the Mac Pro owning community that it had been too long since the top end of the Mac family had been updated.

This week, the scuttlebutt is that Apple will use WWDC to announce updates to the Mac Pro (supported by reports that at least some Apple Stores are out of stock of the current models), the MacBook Pro, MacBook Air, and iMac.

In recent years, only two new Macs have been announced at a WWDC, and that was in 2006 and 2009, so the precedent is quite weak. But for those who like simple numerical sequences, 2009 was three years after 2006, and 2012 is three years after 2009...

AppleInsider has received what purports to be an Australian price list for forthcoming products, and those prices do seem consistent with new MBPs, Airs, iMacs and Mac Pros. But it could be a complete fabrication on the tipster's part.

On the other hand, it'll be no surprise if Mountain Lion features in the keynote - it might not be "available today," but in that case I'd expect to hear a more specific release date than this northern summer.

WWDC starts on Monday in San Francisco, so we don't have long to wait to find out how accurate the rumour mill has been on this occasion.