Although nothing is official yet and everything is purely speculation, here are a list of all my favorite iPhone 5 rumors and concepts:

A better camera, bigger screen, and sans home button (via unwir3d)

Metal back made of a lightweight metal, possibly aluminum, there have also been rumors of Liquidmetal, a futuristic substance that’s as easy to mold, lightweight like plastic, but as strong as aluminum (via DMA Central).

Tear drop shape? An already thinner iPhone will taper as it nears the bottom (via digitaltrends).

iPhone 5 shaped like the Magic Mouse (via CiccareseDesign)

A clear iPhone? Possibly...

Other rumors include:

• Redesigned look - As the concept images above say, we're guaranteed a redesigned look for the newest iPhone model.
• Larger screen - This one is almost guaranteed, along with an edge to edge screen. The common rumor is that we should see a increase to a 4 inch screen.
• Near-field communication (NFC) - This technology has been rumored for some time now. It would allow users to make payments iwth their handset just like they do now with credit cards. Some Androids already have NFC but NFC adoption is still low and could be years away from gaining in popularity. Would Apple waste their time with this? Or could it be Apple that will bring NFC to the mainstream?
• 4G connectivity - Another long-standing rumor. But who knows? In the past, Apple has been slow to connectivity changes. Afterall, Apple did wait a full year to jump on the 3G bandwagon. There's a greater possibility Apple will wait until carriers have opened more 4G networks.
• Liquidmetal - Several rumors state that several components of the iPhone 5 will be made out of a super-strong metal alloy called Liquidmetal that are extremely lightweight.
• Additional carriers - iPhones have been about exclusivity but will they branch out to include other carries? Perhaps Tmobile due to its large 4G network?

What other rumors have you heard? Which are your favorites? And which can't you live without?