Macbook Pro was just updated recently. I wouldn't expect anything until next year.
I would. The iMac was updated with an C2Xtreme chip that wasn't rumored to be released from Intel until Sept/Oct of this year, at the same time 2.6GHz standard C2D Meroms are rumored to released as the top of the line chip. A small incremental perhaps. but then recall the iMac also supports newer 800MHz DDR RAM memory, which could also make it's way to a speed bumped/revised MBP, along with the already mentioned LED 17in MBP, and we might expect refinements, modest other upgrades, perhaps a better GPU, the already known to be screamer 200GB 7.2k rpm Hitachi HD, and perhaps a 64GB SSD Samsung drive as an option (annouced a few weeks ago for Dell laptops @$1100 premium...as usual Apple is the lagard when it comes to the laptops).
Through in the known LED flaws of the initial MBP, and it's easy to see a revised MBP toping out with 2.6GHz as coming out in the next month or so, before or after Leopard is released...if possible a 2.8Ghz Xtreme CPU, but I'm thinking that CPU runs way too hot to be shoehorned into the thin laptop series.
Next MacWorld '08, with it being known that Penryn will be shipping this November (as per Intel) for desktop systems, and it being know that Penryn is a simple dropin replacement (for Apple) for the Merom on the SR motherboard, we can guess that a mobile Penryn in a MBP might make it's debut at MW '08 (then again, it will probably make it into the iMac 1st, if Apple's current history is any indicator). By summer '08 at the latest, faster Penryn w/Monteviña chipset will go into the laptops, and more efficient DDR3 RAM should be availble by then (it's here now, just not at same performance levels as the best DDR2) and the process of when to buy starts all over again

...if it ever ends, lol.