Does Nikon D7000 has effects such as Miniature Effect?

I want to upgrade to D7000, I wonder, does it has some creative effects/ filters?

Nikon has a website that they use to show case their gear. You can look at the cameras, their specifications and features. You may even be able to download the manual (I know that Canon lets you do that) to really study the camera you are interested in.

An educated shopper is a happy shopper.

The D7000 only has a number of exposure pre-set modes, called scene modes. Howver, Nikon's nomenlature is not consistent, because what's called a scene mode on the D7000, they call a special effect on the D5100 (e.g. High Key/Low Key).

Nikon lists the following scene modes for the D7000: Portrait, Landscape, Child, Sports, Close up, Night portrait, Night landscape, Beach/snow, Sunset, Dusk/dawn, Pet portrait, Candlelight, Blossom, Autumn colors, Food, Silhouette, High Key, Low key.

The (cheaper) D5100 has all this as well as seven 'special effects', including things like miniature, colour sketch and silhouette, and a retouch menu to alter pics after they've been taken (inlcuding for instance, a fish-eye effect).

The D7000 is Nikon's current top-level consumer camera and comes close to their (semi-)pro D300(s) range specification, the D5100 is marketed as an advanced enthousiast model. Generally speaking, the more advanced the camera model, the less special effects it has on board.
Pro-spec cameras are aimed at skilled photographers who know how to tweak a camera's settings, lenses and filters (or any photo processing software for that matter) to get the effect they want. Amateur camera's use a built-in software approximation of that effect. Btw, note that Nikon's top of the line, professional cameras such as the D3s/x and D4 have no built-in scene modes or effect filters whatsoever.

The fish-eye retouch effect on the D5100 makes the pic look like an exaggerated ultra-wide angle pic when in fact, it's not. The D5100 just can't invent extra pixels beyond the angle of view of the lens that was being used during the shot, the photo will only be distorted to give it a fish-eye look. To get a true fish-eye effect, an advanced/pro photographer would use a (expensive) real fish-eye lens which gives a true ultra-wide angle of view.

The same goes for the miniature effect: the D5100 gives a software approximation of that effect, but to get absolute control over what's called selective focusing planes (which causes the miniature effect), you could use a lens such as those made by Lensbaby (see link below) or a tilt-shift lens.

The D5100 might be a better choice for you because it has lots of on-board software effects/filters, and should you wish to take a more controlled, professional approach you can always use a specialist lens or screw-on filter without changing the camera body. The D7000 lacks all of the fun filter stuff.