Does Apple offer a upgrade coupon like Microsoft did with Vista? I plan on buying a Macbook soon, but wondering if I should hold out until Leopard comes out.

No, I never saw something like that.

The only things I vaguely remember is that they offered nice prices on the extras like extra RAM.

But maybe someone catched a good deal on Black Fridays.

If I remember well, when tiger was out, there was a reduction for all of those who bought a mac three month before.
Tiger was sold for 29$.

It was not three months.

All Macs sold between the announce of the shipping date of Tiger and the serial-install had a reduction. So it was ~1 month long.

Yup, once they announce the shipping date, and you buy a Mac before it's released, you can get it for $30.

Until then, it's full price. Wait until Apple announces what the deal is with Leopard if you want to avoid that.

Well I mean years ago, when the first PowerBooks appear, then the G3 PowerBooks.

Apple politic has changed over the years...
It's not really interesting talking about 10.1, which was free for all the buyers of 10.0 (free...just what's needed to send it to you...)

Yes, they have an upgrade version its called bittorent!

Coming from a windows user, I am not surprised ...

10.1 was free because it directly addressed many performance and stability issues that plagued the OS.
Rather than deal with people's negative conotations of 10.0, they released the update as 10.1 along with a few additional applications to cement in people's minds that this is entirely new and different. All those old problems are now gone.

In truth, it should have been a "dot" release as is done now with performance and stability issues.

In my mind, I understood 10.1, just as 9.1 : a dot release, not a new version. Apple didn't advertise that as a new version.

With 10.2, the logic behind the versioning of OS X changed. Thus 10.2 also came with a new X.