I just heard about a single cart that is not blocked. But this is just a random cart without any importance to the scene.
The situation is fresh and new, I'm just evaluating it right now.
I'm sure we'll hear something from R4iDSN and Supercard soon. And other carts.
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Team Acekard just made an announcement about their cart:
Quote
Do Not Update your DSi to 1.4.4
Please do not update your DSi to 1.4.4 if your console prompt you to update. We'll release DSi 1.4.4 update file for AK2i ASAP. Please be patient. Thanks.