Not yet, but I did see something about Explorer will be coming out with ver.9 any day now. I'll be interested to see if they've smoothed out the beta issues.

From an article at Ars Technica
"The IE9 public beta, released 4 months ago, requires four hotfixes before it can even be installed, but the browser's installer supposedly takes care of everything for the user. It's not clear whether Microsoft will have the final IE9 installer roll out SP1 to Windows 7 users, but given the company's history, the software will likely spit out an error message and fire up Windows Update for users to get SP1 themselves. Testers got their first Windows 7 SP1 beta build seven months ago, but the final version won't come out until the first half of 2011."