[App_rpt-users] DIAL distribution : a few questions

Hi, After my first attempts with manual compilation on a Cubox (ARM7), I saw the new DIAL distribution, and I installed it on a RPi2. Thank you, Steve, for the great work :-) The choice of a Debian base, and the choice of the targets (rpi2 and i386) are exactly what I need :-) Now, a few questions : 1/ I saw a 'warning' about upgrading the kernel on ARM7 platforms, because it's not fully supported by Debian. Can we safely do an "apt-get upgrade", or should we make a sdcard backup before ? 2/ Are the Asterisk and app_rpt sources included ? If so, where ? 3/ How will the future app_rpt updates made available ?