As Apple's WWDC approaches, rumors about the iPhone 6 and iPhone 5S continue to surface.

The latest iPhone 6 and iPhone 5S rumors are based on Apple CEO Tim Cook's comments at the D11 conference this week. Concept designers have taken Cook's statements and used them to create possible iPhone 6 designs.

Cook said that he and the Apple developers were not willing to create a huge phone, or 'Phablet,' if it meant sacrificing the quality of the device's screens.

Cook's comments were vague, but the concept designers have put forth their potential iPhone 6 and iPhone 5S designs regardless.

Noted concept designer Ran Avni, whose image of a plastic iPhone 6 went viral earlier in May, has revealed a new concept design for the iPhone.

Avni's new iPhone 6 concept features a 4.8-inch screen, a thin bezel, and a 1320 x 740 resolution. This design of the iPhone 6 resembles the iPhone 5, but with a larger screen and a touch-capacitive home button.

This concept also anticipates just a black and white version of the iPhone 6, instead of the rumored colored versions.

Check out Avni's concept video of the iPhone 6 below:

Another iPhone concept video, created by Josh Smith of GottaBeMobile, resembles an iPad Mini more than any former version of the iPhone.

Smith's iPhone 5S concept features an edge-to-edge display screen that is 4 inches in size with a narrow bezel.

It has double the pixels of the iPhone 5, as rumors have suggested. Other specs include a dual LED flash and fingerprint sensor built into the home button. Check it out here:

The iPhone 5S, or iPhone 6 as it may be called, is expected to release in September of 2013, based on various investment reports and rumors. Apple's manufacturing partner in China has also reportedly received the parts needed to begin putting together Apple's next iPhone device.

Although Apple has said they will not release a new iOS device at the WWDC this year, hope is still high that the conference will yield iPhone 6 information.

The WWDC is scheduled for June 10-14 in San Francisco.