Someone is working on JB, perhaps there is hope yet.

[oldpueblo]

[ROM][28-july-12][WIFI/(3G/4G)][JellyBean/411] DextersJB v1.1BETA-3 - xda-developers

I'm installing it now, I just hope 3G works.

 

[oldpueblo]

This is up to 1.4 now and 3G with Sprint works, this makes the device actually comparable to the nexus 7 now. Not in performance, but in features like 64GB of memory possible, pen, etc.