It is great news, when I received the email from Linode. They start upgrades in Fremont.
I have a VPS in Fremont Linode. It is an old CPU, L5630. UnixBench score is 1186 only. The new CPU with E5-2670 has over 2000 Unixbench score.
It is more powerful.
When the upgrade done at Linode side, I will see the upgrade button on dashboard.