[pieter]

Why? Nothing changes for you. Developers can still create universal binaries that run on your macs if the choose to do so. The only thing that changed is running PPC-only apps on intel machines, which is something nobody really cares about since there really aren't any PPC-only apps on the market. You already weren't able to upgrade to the latest OS, as Snow Leopard is Intel-only.

You could be worried about developers creating intel-only apps, which you won't be able to run, but that already happens on a big scale because almost nobody uses PPC macs anymore. This has nothing to do with Lion.

The bigger problem with Lion may be the dropping of 32-bit macs. Most people don't really know if their mac is 64-bit (Core 2 and up) or 32-bit only (Intel Core's, which is mostly the early Mac Mini's, iMacs and Macbooks I think). It's good for developers who want to write 64-bit only apps though, because once Lion has been adopted and SL support is dropped, they can just say 'Requires Lion', instead of the somewhat awkward 'Requires Snow Leopard on a 64-bit Mac' right now.

[justincormack]

I stopped using my G5 because there is no ppc support in v8 and hence node.js. Most of the new JITs dont support ppc. I havent got rid of it yet though and I dont see the point in installing Linux until Apple stop security updates for 10.5 which is some way off... Useful for testing code where endianness matters.

[pornel]

According to http://adium.im/sparkle/ 95% of their users have 64-bit Intel CPU.

[tvon]

The first Intel Macbook Pro is Core Duo as well.