ETA for this project?
Also, a lot has changed since much of the original discussion. The application was on track to be released, well... around right now. However, when Vircurex surprisingly dropped SLC support, work was postponed until an exchange could be released for people to buy/sell Solidcoins.
The bottom line is, if you have existing Solidcoins or if you want to get in on Microcash BEFORE the release, you will have the option to do so. Once the new SLC (future Microcash) exchange is finished, development will continue and finalize for Microcash. I imagine that could be in as little as a month or so, but I haven't talked to the lead dev about that yet. 1 month is just a hopeful guess.