Linux App Version Q

I am currently running v4.21 on my Linux machines. The issue is- if the Linux app is upgraded, will the new Linux app be available for download? I currently need to run with a app_info.xml file due to Linux x86_64 with Boinc x64. *Or* is Einstein going to update so they will send the 32 bit app to a 64 bit client like most projects are doing now? This is an issue as I am going out of town for a week or so and will not be able to manually update my machines. Also, do we have any kind of an estimated ETA on the new app (I won't hold it against you if the "guess-tament" is off).