The iPhone OS 3.0 Beta 4 arrived just a little later than expected – but it’s still good to see it, and nice to see that the pattern of a new beta release every two weeks is continuing at a steady pace. This has been reported by several sites now.

Some have only had the new beta installed for a short while, and so far have only noticed a few new things and changes. For now, we’re going to be optimistic and hope there is some good bug squashing under the hood of this one – if it could stamp out the disappearing Call button and intermittent battery drain issues that would be very nice.

Here’s some very quick thoughts on beta 4 so far, compiled from several sources:

* Many ran an update rather than restore again; it’s quicker and easier.
* Biggest / only big change we’ve read about so far is that Settings > Store is no longer a blank area. It lets you view your account info – all your address and payment details etc, and edit them. There is also a ‘Redeem’ button. It would be great to be able to redeem promo codes directly on the iPhone, but so far no one reports this button to work.
* Force Quit is still missing. We’d really like to see this come back soon.
* Apps compatibility seems largely as it was in the last beta (very good) – although Evernote is notably back to being extremely flaky / not very usable – as it was with the first two betas.
* Support for additional over-the-air PIM synchronization sources (including Google and Yahoo in iTunes)
* Continued improved tethering support, and a basic UI for managing an iTunes store account.

Anyone here have the beta and can report other new features/quirks?