As we near next Thursday’s Apple event where the company is expected to release information about the iPhone SDK, some details are apparently starting to leak out.

First, it seems the iTunes Store will be the main base for downloading and installing new SDK-built iPhone apps.

No real surprise here, many people expected this and it makes sense as a clean and easy way for Apple to allow for installs.

It will also, naturally, allow developers access to a simple way to charge money for their apps.

Second, it looks like Apple will have total say over which apps make the cut and which don’t in terms of being included in the said store.

While I understand why Apple is doing this – they’ve always been about maintaining the quality and control of their products – this is quite lame. Sure the iPhone is “opening” up, but that “opening” will either need the added quotation marks or an asterisk now.

This means Apple could potentially nix something like a native Skype or other VoIP applications on the iPhone. If that’s the case, look for those hackers out there cracking the iPhone to stay relevant for quite a while longer.

Third, developers won’t have access to accessories.

I don’t see this as that big of a deal. It would seem that developers will be able to utilize all the major components of the iPhone itself – the multi-touch capabilities, the WiFi, etc.

I care less about them using something like my car adapter – for now at least.

Fourth, rumor has it that only a very early beta of the SDK will be announced on Thursday, the real version may not be out until June!

This is not good news for Apple which naturally didn’t give any hints of this the mutiple times Steve Jobs promised the iPhone SDK would be ready to go in February. It now looks more like the iPhone SDK BETA in March and the iPhone SDK actually coming in the summer at Apple’s WWDC event.

Could the 3G iPhone actually beat the SDK to market?