As we close in on WWDC, which kicks off with a Steve Jobs keynote on June 7, more details about the next revision of the iPhone continue to leak. The supposed display and aluminum chassis have been throughly examined, while Chinese manufacturers claim to have cases ready for sale. Also, the latest beta of iPhone OS 4.0 has a working implementation of Places in the Photos app, similar to the feature that appeared on the iPad this year and iPhoto '09 last year.

Czech site Super iPhone put what is believed to be the display of the next iPhone under a microscope, and compared it to current iPhone and iPod touch models as well as the Google Nexus one. The analysis suggests the next iPhone will have a wide viewing angle IPS LCD display, much like that found in the iPad. The resolution should also be 960 x 640 pixels, as is widely rumored. The benefit here is that current iPhone apps can be pixel-doubled to fit the screen with no apparent difference in quality. However, apps that are built to take advantage of the higher resolution will look even better. In particular, the 320ppi density should make text extremely sharp, even at small point sizes.

iPhone Portugal—currently offline with its ISP reporting the site's account as "suspended"—got its hands on what are purported to be the machined aluminum and plastic inner chassis for the next-gen iPhone. These frames were reportedly purchased in China, and it's not known if they are authentic or not. However, the site claimed the quality and workmanship led them to believe the parts are the real McCoy. The site created lengthy videos comparing the frames to the iPhone 3GS and iPad—from what we have seen from the videos and earlier leaks, the parts do appear to be legitimate.

Unsurprisingly, Chinese manufacturers are already claiming to have cases for the new iPhone ready for sale. MacRumors points out that these cases are likely designed around leaked prototypes or parts, which has happened in the past. The tactic backfired last year, however, when an updated iPod touch shipped without the camera which some prototypes had.

Finally, AppleInsider has screenshots detailing the recently activated Places feature set to debut for iPhones and iPod touches in iPhone OS 4.0. The feature had already been promised for the update, but it wasn't functional until the most recent developer beta. Places will show a Google map with pins indicating where particular images were taken, essentially identical to features found in the iPad's Photos app and on iPhone '09. As expected, Faces and Events will also likely appear in the final version, expected to be revealed in full next week during WWDC.