In theory when the WHOIS changes, Google resets all their information on the domain. At least, I was told that at one point by someone on the inside. In practice - it probably can take a while (weeks to months to a year). You can always file for reinclusion, but only if it's a developed site. It may depend on what the domain is and what you're using it for; it'll be subject to human review regardless, so you'd want to have everything shipshape.