The letter doesn't explicitly say (I'll way to hear from friends at CRM to get actual details) but their SEC filing mentions stock-based compensation as an associated cost of the layoffs, so it sounds like accelerated vesting might be happening.

I read that they will technically be on payroll until late March. If that's the case, it's not so much accelerated vesting as it is vesting while not being "employed".

So same result, to some extent.

FWIW, I was laid off earlier in the year, and was put on garden leave for 60 days. My vesting stopped immediately, even though I was still employed for 2 months.