Here's what we think we might hear from the social networking site when it announces its latest creation at 10 a.m. Pacific Time tomorrow at its Palo Alto, California headquarters.

Developing for several different platforms at once is definitely an unenviable task for Facebook's coders. Thus the company has embarked on a new path dubbed . Essentially it's a development platform that is based in HTML5, which is supported across several platforms.

Using HTML5 in Facebook's mobile apps would be smart. The company would not need to depend on Apple to approve its app for inclusion in the App Store over seemingly minor updates to functionality within its app, and could unify the experience from platform to platform.

But -- not so fast! MG Siegler at that Project Spartan won't be ready until the middle of this month at the earliest. It also seems likely that these features would be rolled out gradually and not need a press conference to unveil them.