Today the Korean web magazine, GameMeca, published three new StarCraft II screenshots, featuring the never-seen-before Terran Firebat and Protoss High Templars using Static Field.
Take a look:

Update:Karune has started an open Q&A thread in the StarCraft II forums about these screenshots. Already he has answered several questions about these screens.
Quote:
What is the mysterious turret that is in the screenshot that has yet to be revealed? We've seen this before.... can you tell us what's behind this?
The turrets are dropped by the Nomad (using energy), acting as decent defenses, and even better harassment, if used by a skilled player.
Also, does the Firebat have any special abilities for instance one that makes a wall of fire and is channeled? Is there anything fresh that we haven't seen for the Firebat?
The Firebats are back with the same fire loving attitude, but with added Hit Points to help them get real close to their enemies. Firebats also must be produced from the Factory rather than the Barracks from the original StarCraft, since their suits are larger and able to sustain more enemy fire.
A About the force field, it is channeled? if so how long does it last, and what exactly it does, I mean you can't pass through it or it acts as a barrier or something...
The Force Field is currently an instant cast, costing energy from the Protoss High Templar. This Force Field prevents all units from passing its perimeter.
The High Templars appear to have an attack coming from their hands. Do they now have an attack of their own, or are they channeling the barrier spell?
We are currently experimenting with giving the High Templars a standard attack, just enough to keep him out of trouble, but not actually powerful enough where you would want to use them as an offensive attack unit. The High Templar's primary role is still to be a caster of special abilities.
[...] But... wait, wasn't Force Field moved from the High Templar to the Stasis Orb?
Over the past month and coming months, there will be a many ability swaps. From week to week, it could change significantly. Nonetheless, I'll try my best to keep you guys updated. At this very moment, the Twilight Archon is being tested with some of the original StarCraft High Templar abilities.
[Regarding Destructible Doodads] So are destructible attackable by all units or just high damage units like Siege Tank/Colossus? Can you click on the rocks and stuff to see their HP or anything?
The rocks will have viewable Hit Points and can be destroyed by all units. In some maps, this type of environmental interaction could allow access to both 'secret expansion locations' as well as 'secret paths' to an enemy's base. Knowing the maps well will be crucial to the strategy involved in multiplayer skirmishes.
View the thread
here (with many other more responses by Karune) and post up your questions!
Sources:GameMeca.comKarune's Screenshot Chat