Mike Melanson is the lead engineer of the Linux Adobe Flash Player team. Finally, some word from the inside! Check it out here.
It looks to me like their just working out the final bugs and getting ready for a release. My guess would be late this year, early ‘07.
Also check out the Adobe Linux Flash Player dev blog, here.

 

Until then, here’s how to dupe a website into thinking you have flash 9 installed.
First update to the latest available flash for linux.

 Then,

cp ~/.mozilla/firefox/pluginreg.dat ~/.mozilla/firefox/pluginreg.dat.bak

Open with a text editor (nano, gedit, kate)

 gedit ~/.mozilla/firefox/pluginreg.dat

Now, find this line:

 Shockwave Flash 7.0 r63:$

And replace with: 

Shockwave Flash 9.0 r63:$

 

There you have it. Now when you visit a website that requires Flash Player 9 (such as Myspace), it will tell the website that you have Flash 9.