Yes. And how much software is currently written (or will be written
in the near future) for these 64-bit chips? Not much. 64-bit CPU's
will run 32-bit software, but not as efficiently as a 32-bit CPU does.
Much the same happened with the introduction of Win32. The first version of
Windows 95 was awful; the accompanying Office 95 was unusable. IIRC, Access
95 was so bad that Microsoft sent out a free upgrade to all customers.
It didn't take long, however, before practically everything was labelled as
32-bit; although I am sceptical how much the compilers are actually
optimising for all that 32-bit internal CPU stuff. I guess when the
processors and the OS are actually in the shops and selling, the
marketeers^W helpful retail assisstants will not be far behind.
All the best
Tim F