When a company posts that they support Linux, 9 times out of 10, they are talking about x86 (most times not even x86_64 (aka 64bit)) support. The processor in the EfikaMX is an ARM processor. Matt replied in much more detail to you via email, but suffice to say, that we cannot make any changes to the Citrix receiver as it is not open sourced.
As mentioned (and so everyone else who has the question can be aware :) ) we unfortunately have no roadmap, release dates, or timeframes from Citrix on Receiver updates. We are in contact with them but do not have any concrete answers from them yet.
Steev Klimaszewski, Genesi USA Inc.
Senior Software Engineer