SAN FRANCISCO--As it does every year, Apple started setting up for its Worldwide Developers Conference days in advance of its kickoff, offering a glimpse at what will greet attendees next week.

Signage put up by the company today inside the lobby of San Francisco's Moscone Center doesn't unveil anything we didn't already know from a press release issued earlier this week, but offers the first look at the logos for iCloud and iOS 5.

iCloud was first mentioned and named by the company on Tuesday, along with word that Apple CEO Steve Jobs would be doing the keynote address. iCloud's rectangular, app-like appearance on the banner suggests it will exist separately of iTunes, and potentially fit in with the company's existing lineup of MobileMe services to which it bears a resemblance.

As for the iOS 5 logo, it's nearly identical to the one for iOS 4, short of having a 5 instead of a 4. That could simply be a branding choice rather than an indication it will be an modest update from the current version.

Along with iCloud and iOS 5, Lion is given a spot at the very front of the pack. Apple first introduced the upcoming version of the Mac OS at an event back in October, and is likely to offer a price and release date at Monday's keynote.

For more shots of the inside and outside of Moscone, hit the gallery below.