Maybe they're waiting for the DMCA jailbreaking decision to expire on the chance it won't be renewed. They would break the current jailbreak with 5.1, and further jailbreaking would be illegal again. This IS, primarily, a marketing-driven company more concerned with sales than what their customers want or need, so it wouldn't surprise me.
So what everyone is say is that the option to delete photo stream is the ONLY new feature? Then what is the use of putting it out. Shoot I will be on 5.0.1 for a long time. Happy with it so far and not worth having photo stream delete just to lose a JB. Maybe after it is JB then my update.
There will be more than just being able to delete photo stream pics.
I think market-driven would apply to most successful Companies...... It's not illegal to make money. Got to go!! Have to check How my Apple shares are doing..
I expect it to be dropped when they announce the iPad 3.
Pretty safe bet there are unannounced features in the GM that will only be revealed tomorrow.