That's far away from sure. I don't know why everybody expects an update with montevina. It's a possibility, but not more or less likley than getting an upgrade now.
it all depends how tight is apple working with intel. And how much money u want to invest. Is it worthwhile to modify montevina to ur needs or do have time to wait for any further chipset.
If they want to optimise a notebook for montevina, then the design is ready by now and they're up to protypes and getting ready for production soon, if one really expect them to be ready in june!!
The process from desgin to production is not gonna happen in a couple of month.
I for one don't believe will be there in june. try september. regardless it would be foolish for apple not to move to the montevina platform. there are major benefits in over design and import laptop features such as reduced power consumption and take advantage of the 1066mhz fsb penryn chips.
the alternative is to wait until freakin' mid-2009 to build around the nehalem processors.
For apple to do anything other than release updates with penryn procs soon, release montevina updates 3rd quarter and nehalem procs next year would require a level of collusion on apple and intels part that is so unlikely it's not worth considering.
although, if apple were to move to montevina early, ahead of other manufacturers, it would allow them to justify ram prices, with ddr3.