Yes, I also explored the matter little bit, it is all the way a new architecture, and requires a separate binary to be places in Firefox Market Place. So what one can expect is the firmness on the price point, if the FireFox OS bases phone is to be sold at higher than 25$ then it will be a very tough time for them to sell. As that is the only attracting feature for a new buyer.
If Firefox OS can run on 128MB of RAM it is really a very great design, but will it be able to run the android applications on it? The article says Android KitKat based applications are supported on Firefox OS, if it really does that then Mozilla should first launch an emulator that can run on Android old versions supporting the KitKat applications. It will really create an awareness among android users and people will rate the OS.
It is indeed a very good initiative taken by Spreadtrum and Mozilla, this will really extend the reach of the present day mobile access pattern to virtually all the users of mobile phones. At present the entry level mobile consumers are not being able to use the benefit of the web bases application access properly. With this mostly all of them will be able to have reach to those applications like whatsapp, facebook, viber, tango etc. Simultaniously it will also provide opportunity for the mobile service providers to earn more on data access.