I also like to share my experience with the new bootloader:
I'm running a HP Proliant MS Gen8 with Celeron-Processor and 3GB RAM, baremetal.
I updated from Juns Loader 1.02a for DS3615xs running DSM 6.1 to Loader 1.02b for DS3617xs with DSM 6.1.2.
I only changed Vid/Pid in the bootloader, MAC Adress and SN leaving untouched.
I done a migration with this update.
After 24 hours I ran into the "Timebomb-Issue".
After that I made a clean, new install with the same settings.
I had to reinstall DSM and my packages and everythings working great.
I didn't lost any data, and the system is running for about one week without any issues