I've just come back from taking the Windows Mobile 6.1.4 emulator featuring Internet Explorer Mobile 6 for a spin. Conclusion: IE6 on Windows Mobile is better, but Microsoft still has a long way to go to make it brilliant.
Note: Yes, I did say IE6 for Windows Mobile. There's a lag between the mobile and desktop version of IE.
I'll be straight with you - IE6 for Windows Mobile is better, but it's not good enough. As it stands, IE6 for the Windows Mobile is what the browser should have been a few years ago. Compared to say, Opera Mobile 9.5 or Safari on the iPhone, even this new browser looks and feels quite old and tired. Don't get me wrong, if your on Windows Mobile and you're still making do with IE, the new version will seem light years better. But if you are the sort of user who immediately downloads and installs Opera Mobile, you'll carry on doing this.
Well, partly it's the rendering engine, which while it seems to render pages far more accurately, still feels slow compared Opera on the emulation platform (things might change with the release version). But the main problem with IE6 on the Windows Mobile platform is that the UI seems awfully primitive and makes the job of using the browser a lot more difficult that it need be. Simple things such as zooming, handling option settings and favorites/history are all much quicker and easier to do with the Opera browser.
I give Microsoft a B- for effort, but a D for the end result.