Dev Alpha (original) with the new update 10.0.9.388.
From fully off, time from pressing the power button to when the lock screen appears and I can type in my password: 1 minute, 5 seconds (give or take a few seconds since I was startled it was so quick).
That's some improvement. Anyone have Dev Alpha B times for comparison?
I am quite impressed with the startup time on dev alpha on bb10 especially when compared to previous dev alpha boot up time and the super slow PlayBook bootup.
Just timed Dev Alpha A with beta 4 (10.0.9.1103) and got a much worse 106 seconds this time, for a restart. Took 11s from red LED till the BB logo, and then another 65s till the spotlight animation started.
Doing a cold start (from powered off) took similar time. Numbers for verification: 12s from power button/red LED until BB logo, another 67s till the animation, and a total boot time (to lock screen appearing) of 108s.
I'm not really concerned about it though. Overall the thing is way faster, and in any case if you are never willing to take a few steps backwards, you'll quickly find a "local maximum" and get stuck there, missing the bigger picture. They know what they're doing... :-)