Here's another hyperlight 1 man tent I just found. 2lbs. 1 oz. total weight.
Apparently due to be released at any point now:
Easton Mountain Products
It's good to see a 30 denier silnylon PU coated floor to 2500mm water column. Some of these hyperlight designs compromise in how watertight the floor material is. I tend to think that 2500mm is about as low as floor material should be and I really wouldn't want to go with any smaller nylon fibers for a floor than what is in 30 denier nylon either. You don't want a stream running through your tent and the floor needs to have some abrasion resistance.
Easton Mountain Products is part of Easton, the folks that make Easton arrows that many of us are familiar with. They are using some of their carbon arrow technology in the single pole this shelter incorporates and that is one area they are able to shave weight to produce this very lightweight shelter.
Side entrance is a big plus over end entrance as well--only have to do that once to realize why.