Cryptic Studio's goes through a relatively predictable set of steps when it comes to new issues: feature update, some interviews (and screenshots!), and finally the issue hits test. A few weeks later a new Issue is out of the oven and on live servers.
It's a torturous process, but Issue 11 is now on test server, so we're almost out of the gate! Soon there will be Dual Blades scrappers, brutes, tanks, and stalkers running wild through both Paragon City and the Rogue Isles.
There are no patch notes as the beta is closed at the moment, so if you're one of the unlucky saps not in the closed beta. . . Well, I've got a box of kleenex. Alas, Lighthouse assures this closed state of beta will not be nearly as long as the Issue 10 closed beta. So it won't be long till we can all try it for ourselves. You can currently patch your Training Room client and check out the character creator. If you can't be bothered, we have some links from the forums to some useful (and public) information posted thus far.
Dual Blades and Willpower Power Descriptions
Screenshots of the new weapons in weapon customization