Tabu, the folks behind
Aside from size, this bulb has a couple of other distinguishing characteristics. First, it's a color LED bulb, so you'll be disappointed if you're expecting the same "warm white" option offered on the original Lumen. That makes the Mini a bit more of a mood light and a bit less of a continuous use light. Of course, you can use it however you like, but it really is designed for a party atmosphere. Just download the free Android or iOS app and you can change the color to suit the specific atmosphere you want to create.
The Lumen Mini is available in two different bases; the E27 and the smaller E14. That makes it a bit more versatile if your fixtures support different socket sizes. Look for this LED on Kickstarter in late January -- it's expected to retail for $30.