Half of the theories that are detailed in this Mashable article about the iPad 3 event can be explained by realising that the calendar icon depicted may not be in the central dock position (i.e not directly above where the home button would exist).
That icon position in the dock is a completely reasonable justification as to why you can’t see the home button, why the water droplets are in the ‘wrong’ position, and why the home screen page markers are non-existent. Along with the other pointless theories people have brought forth.
You can try it for yourself. Set your iPad in landscape mode, select the same wallpaper, and see where the same droplets lie on the screen.
I have to stress, all of the ideas this post suggests may become apparent at the event on Wednesday (I personally believe there is some weight to a virtual home button, though I’m not sure I would like it). And it is true with hindsight that the invitations Apple serves out have hinted at what products they will announce at events.
But, when the writers at Mashable do not have the journalistic competence to at least consider such a possibility I have described, it shows to me that this article is just fruitless link-baiting bullshit.