The Argonaut has posted this update (and photo) on their website.
In short, they plan to reopen the patio and the upstairs tomorrow, while the downstairs and kitchen remain closed pending post-fire renovations. The goal is to have two beers on tap and other beer, wine, and cocktail selections as well as limited menu of offerings, including sandwiches/panini (including peanut butter and nutella), soup (gazpacho), salad that can be prepped in advance and cooked on panini presses, etc. At least initially, they will likely operate cash only.
It's all coming together very quickly and there are sure to be some bumps in the road, but this is great news for the granddaddy of the new restaurants and bars that have arisen during the H Street renaissance. Be sure to stop by and say hello soon.