Why Should I Wait For Surface?
What's Inside Surface
Surface vs iPad
The last time I heard, Microsoft also announced its flagship accessory for the Surface, called the 'Touch Cover', which is basically a keyboard and a touchpad nicely disguised as a magnetic front cover.
Although it looks a bit uncomfortable to type on, I can only drool on the prospect of typing a full project in a real keyboard the next time I bring a tablet. So for the productivity addicts out there, I personally think that the Surface (or at least it's Windows 8 Professional version), is really, really worth the wait, especially if you're thinking of writing or editing photos while on-the-go. As much as I hate to say, the iPad or well, any android tablet, can't really do those stuff. Okay, it can, though in a very roundabout manner, for example, with the iPad you need to buy a $30 adapter just to be able to connect a USB device.
Going back to the Surface, I think it's very much possible to directly connect your camera to the tablet's USB port and do some serious photo editing. (read:--not limited to filters). If you are thinking to buy a tablet that can actually do what your laptops can do, then Surface is pretty much your only solution right now.
When will surface be released?
Here's some eye-candy treat for you while waiting:
For more detailed differences between the two version of Surfaces visit Engadget.
Hi-res images from Microsoft's Surface official page.
Update: the Windows RT and Windows Professional Surface will be priced at $599 and $999 respectively