I heard that Apple are moving to Intel chips. Does that mean we can install the next OS on a PC?

NO, this thread has been done to death.

Intel CPU's* (and I believe AMD CPU's) have a code encoded in them, this will mean the X86 version of OSX will check the CPU Code to ensure that you can not install OSX on a standard PC. The actuall CPU's Intel will manufacture will be special versions for Apple.

* PII's introduced code checks in the BIOS POST.

No, but apparently windows will run fine on the new macs..in fact i'd suggest going that way anyways, because Apple will be starting from scratch, with *NO* third party applications available, and absolutely no backwards compatibility with the previous 20 years worth of Mac applications..rendering everything that has been accomplished in the Macintosh world obsolete,
as well as building from scratch a brand new user base of anyone who has either never before had a mac, or those entirely willing to discard every bit of their Apple software and hardware in order to comply with this "brave new world" of Apple's.
Oddly enough, the move wasn't excused by the supposed superiority of the Intel chip, but rather by IBM's supposed inability to deliver a 3 GHZ chip for the apple notebooks..
Meanwhile, Microsoft (remember "WinTel"?) has switched to IBM's 3.2 GHZ ( that's more than 3 GHZ, folks..) PowerPC for their XBOX 360, and even used the Mac G5 to demonstrate it!
Go figure...
Speaking for all those suddenly marginalized PPC mac users, it'll be a *cold day in the underworld* before i sell off all my mac software and hardware to switch....

dominicus did you not watch the WWDC Keynote?
You are so misinformed, I will not touch most of your
comment.
It will not run on PC hardware out of the box.
As for apps, developers have new tools to make universal
binaries that make BOTH versions of an app, so apps are on
the way.
Apple has secretly worked on this for over 5 years, as he
(Steve Jobs) stated in the Keynote.