Major retailers will be restocking current models of the iPad, leading to speculation that the iPad 5 release date is delayed and new specs of the next generation of the iPad are rumored, according to iOS Doc.

Stores that sell Apple products, such as Best Buy and MacMall, confirmed that stock of the iPad 4 was replenished and is available at the same price.

Apple left the third-party retailers with no stock, according to rumors, suggesting the iPad 5 is still in production and will not be released until the end of the summer or later.

The iPad 5 is apparently expected to have a 9.7-inch retina display similar to the iPad 4, with a resolution of 2048 by 1564 and 264 pixels per inch. Customers may have the option to include 4G LTE in the device and be able to choose different storage options including 16GB, 32GB and 64GB. 

Pricing would likely not start any higher than the highest price of the current generation of iPad at $499 for 16GB of storage. There is speculation that the retail price will increase by $100 every time the storage is doubled.

The next generation iPad will also have an iSight camera with 1080 pixels HD video recording FaceTime HD camera, according to iOS Doc.

Rumors that it may have Sharp's IGZO screen technology, which would not affect the battery life. There is also speculation that the iPad 5, like the iPad mini, could be thinner and lighter. According to FullSignal.com, Apple wants to keep making their products lighter and thinner as new versions of the iPad and iPhone are produced.

Rumors also suggest that Apple is working on figuring out a way to further extend the battery life of the iPad.

Apple has not officially announced a release date for the iPad 5.