Vengit team as been testing their SBrick prototype v4, where they have fixed some issues from the previous versions, and presented us some videos about the progresses.
Watch them below.
Testing early WP 8.1 application for SBrick.
Testing SBrick v4 with an old style LEGO 9V power source, and the problem with original PF M-motor.
SBrick load & stress test
SBrick v4 radio range test
So it looks we're one step closer to get them produced.
You can follow the progress at SBrick Community.