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.
This is the email I got.
We have scheduled a maintenance window for the physical server your Linode is hosted on:
Friday, June 7, 2013 between 3:00 AM and 11:00 AM UTC
(Thursday, June 6, 2013 between 8:00 PM and 4:00 AM PDT)
Downtime from this maintenance is expected to be less than 120 minutes, however please note that the entire maintenance window may be used if required. Your Linode will be gracefully powered down and rebooted during the maintenance. Services not configured to start on a reboot will need to be manually started.