Last time I checked x64 was backward compatible with x86. But not the vice versa. So do you really think ,in 2 years time, we`ll be having x64 only versions of regular apps such as Office, Browsers, media players etc.
Will it be monetarily viable for these companies to ignore that much of User Base. ie all the people who bought a Mac in 2006. And really, tell me what difference would Merom make when using such apps? Will it really make a page in word open .003 seconds faster? Coz rite now it takes less than a second.
No... Dont count PS/FCP etc. No one is buying a MB for that purpose at all. If someone really wants to have such high computing then they`ll go for a MBP, that too if they neeed a portable solution only. And would you really do such stuff on a 13 incher?
This is the best option IMO for most of us who really need to use pro apps- A Merom iMac plus a 13" Yonah MB
Cost of a Merom iMac+Yonah MB = Bout 20% extra than a single MBP as powerful as the iMac.
Benefits:- A powerful comp at home/work when you need it. A small cute Lappy for your portable needs.
Disadvantages. You wont be able to edit that 100 MB Photo on your 13" MB

. Neither will you be able to edit those over 60 GB uncompressed videos and compress them to fit on a single DVD

. OMG. Thats way too much.
Hey everyone. Please dont by a Yonah MB at all. It wont be able to do all this stuff. Please wait for a Merom. Yes it`ll make one hell of a difference. Paired with GMA or x1400 with 64vram(at very best), your MB will definitely ROCKKK.