Update: Sorry for the delay. The code is complete for initial release, but it is targeted for the 2.1 server release, which is still very much work in progress. Rather then waiting for 2.1, we decided that we'll backport the changes to our 2.0 branch instead, hopefully it shouldn't be much work. We'll start doing this on Monday.
Ever though about making use of apples Testflight project?
Maybe you could have a public beta testing of the app with the new 2.1 server suport. And in this specific case, beta testing of the Linux Server and the app itself.
Like this you can have two versions at once, one stable and then the test/beta version..
Just a thought!