Adsense Changes to referrals

It has been confirmed that Adsense has now changed the time limit for the Adsense referrals to 6 months instead of 3 months. This will give new publishers, who have been referred by other publishers, a bit more time to reach the $100 limit... and for the referring publishers to stand a larger chance of getting paid for that referral.

Below is the official response from an Adsense representitive:

I just wanted to confirm that based on publisher feedback, we've updated the time limit for an AdSense referral to earn $100 from 90 days to 180 days. If you've already been using referrals, the 180 days will be applied retroactively.

Update:
It seems the post went out way before an official post on the Adsense Blog. The guys there have just posted the time limit changes on the Adsense Blog.

For a change I was half a step in front of Google!