Earlier quoted context omitted.
No they haven't. There's always been an initial 1 year cliff. This changed in the past year. Source: I joined google less than 6 years ago and had a 1 year cliff.
Hmm, maybe different people have different contracts. In our case, the 1 yr cliff was about the signing bonus, not the vesting.
This was true for new grad offers as well as for most experienced hires. I believe I've heard of different structures for cases where Google was doing essentially an equity buyout, but those were absolutely the exception, not the rule.
Are you sure you are remembering correctly?