As for the displays the 30" screens already do 2560x1600, they're still a good bit of money but they'll be affordable within 2 to 3 years (and some people already think they're affordable).
The decade that parallel processing became commonplace
the end of 32 bit computing.
Some unknown manufacturer will make a tablet-phone-musicplayer hybrid and score.
I'd qualify that one, as the "embedded" world tends to hang on to older stuff for a long time. I don't see, for instance, mobile phones going to 64 bit just yet...
So all mainstream machines not being mobile or embedded devices will be 64 bits by the end of the decade (and plenty of those will be too, but you are right, not all of them).
I thought that it was fairly obvious that that is what I meant, after all, we are today also able to buy 16 and even 12 or 8 bit cpus for embedding. But even most mobile phones and pdas are already on a 32 bit platform these days.
I wonder how long it will be before 128 bit is the new 64 bit?
8080 1974, 8 bits, 2 MHz
8086 1978, 16 bits, 5 MHz
80386 1985, 32 bits, 12 MHz
AMDK8 2003, 64 bits, 1 GHz
Only 'x86' parts, if you look at other architectures (for instance 68k) then the dates will be quite different.
The interesting part about that list is that if the clock frequencies had continue to increase I'm fairly sure that the 32 bit model would have been taken a lot further up before going for 64 bits.
So it seems as though the widening of the datapath is to some extent used to offset the limit on CPU frequency.
It's a trade off between performance and storage, and I think we'll probably settle on 32bit for the next 10 years in consumer devices anyway.
Just my 2c
The Windows and Mac OS ecosystems (particularly drivers) need to catch up with 64bit support, currently this is still spotty which is inhibiting adoption. Linux support driver support for 64bit is excellent due to most drivers being open source - but most people are not using Linux.
Also consumer versions of 32bit Windows don't support PAE so only see 4GB of memory (actually 3.5GB after memory mapping of hardware devices) http://en.wikipedia.org/wiki/Physical_Address_Extension and http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx