For 'developers' willing to shell out $99 for an annual membership in Apple's group of Mac OS app creators, Lion is old news already. But the rest of you can finally download Apple's latest operating system -- Mac OS 10.7 -- by hitting up the App Store on your Snow Leopard (10.6.8)-equipped Mac, assuming it's powered by an Intel Core 2 Duo, Core i3, i5 or i7 processor. From our experience with the pre-release version, the 4GB download could take over an hour, even on a high-speed connection, but once you have the installer in hand the upgrade process itself should be complete in about 20 minutes. As Apple previously announced, those with slower connections can also download Lion at an Apple retail store, and the company's also now revealed that it will be offering it on a USB thumb drive as well, which will be available through its online store later this August for $69 (yes, that's a $40 premium). We'll be posting a full review of Lion later this week, but you can check out our hands-on preview for a sneak peek at Apple's latest consumer OS in the meantime.