The Steve Jobs keynote isn’t being live webcast but it is being live blogged by, among others. Engadget and B20.  Some of the relevant highlights:

iPhone: Sales start at 6 p.m.  June 29. (memo to self: get all non-iPhone related AT&T errands taken care of way before then.) Developers will be able to create Safari-based apps. No SDK—can go live June 29. (B20) Jobs: “So you can write amazing Web 2.0 and AJAX apps that look and behave exactly like apps on the iPhone, and these apps can integrate perfectly with iPhone services. They can make a call, check email, look up a location on Gmaps… don’t worry about distribution, just put ‘em on an internet server. They’re easy to update, just update it on your server. They’re secure, and they run securely sandboxed on the iPhone. And guess what, there’s no SDK you need! You’ve got everything you need if you can write modern web apps…”

Safari for Windows: yes, Apple is launching Safari for Windows XP and Vista as a public beta, claiming it is faster than IE and Firefox. 1 million downloads of iTunes a day—more than half-billion to Windows. Jobs: “It’s a free beta, apple.com/safari and who knows, maybe we can grow our Safari share in the future, we can sure try.” (Engadget)

Nothing as far as I can tell on iTunes video rental.

Update: According to the TOS, the Safari download is a time-limited release that expires Dec. 31, 2007 or commercial release, whichever comes first. An educated guess: launching the Windows version has much to do with the use of Safari on iPhone, which Apple hopes will appeal to Windows users much as did iTunes.

—Lots of questions about how developing for the iPhone—actually, developing for Safari on the iPhone—will work. This release doesn’t help much.