The final paragraph
For now, Intel's On Demand program is reserved for servers, and we would expect it to remain a prerogative of Xeon platforms. Meanwhile, back in the day, Intel offered software upgrades for its desktop processors to make them run faster. Unfortunately, that program faced criticism as Intel essentially crippled its perfectly fine processors. As a result, some might think the On Demand program mimics the ill-fated Intel Upgrade Service. Still, keeping in mind that the server world behaves differently than the client PC world and that we do not know the terms of Intel's On Demand, we would not draw parallels here until we know all the details.
You wouldn't download an overclock.