It'll be late July when the updates actually come, when Apple has some volume in the chip shipments from Intel, a late July release also doesn't clash with with the iPhone SDK.
I'm waiting for a new MB, I only need to get one myself for September.
Okay if you need the MB then just get it.....
And the only thing the June the are gonna re-do if a update is acculty (sp) issued is the Aluminum casing so if you want the blackbook or whitebook you would have to get it now or wait if they do update it is buy a black or white one refurbished
If you want to be a guinea pig then buy in June, if not then buy now.