Well, it's said that a picture is worth a thousand words....
No text in this update from Cobra, so please head over to The Portal for three more images. The labels for this update are "Agartha Network" and "Compression Breakthrough", so I guess those are telling enough. And very encouraging indeed. Cobra had referred to the Peach Blossom Spring project in his previous update (here).
I've enlisted the help of a dear friend (though Muggle) to translate the characters in the "sign" (3rd image). Sky/Nature, hole/cave, have (contains?), Different/difference.
Could mean, "Beyond this entrance lies a world far apart from this"....Agartha.