As the wait intensifies for City of Heroes Issue 13: Power and Responsibility to go into closed Beta, powers guy Floyd 'Castle' Grubb has provided a breakdown of some of the main PvE powers changes. None of the Villain Patron Powers or Hero Ancillary Powers are mentioned yet: the powers changed are meat-and-potatoes stuff, which will affect low-level characters as they work their way up.
The most striking change is half way down. Non-hostile player toggles, such as the Kheldians' shapeshifting powers, will no longer drop when a player is held, slept or stunned. This is such a big deal that it demands a visual analogy. Imagine being a floating, tentacled weapons platform capable of delivering a payload of purple death to whole crowds of bad guys. Now, imagine suddenly plummeting out of the sky, transformed to a little slumbering human, complete with 'zzz' emerging from your head. That is what being mezzed does to a Warshade in squid form.
We're not sure yet whether this change is PvE only or also applies to PvP: frankly, the PvP consequences of toggles no longer dropping when a player is mezzed are too radical to contemplate in just one article.