Special Upgrade Offer on SQ - limited-time upgrade vouchers

[futaris]

Free Upgrades on the World's Most Awarded Airline
Free Upgrades on the World's Most Awarded Airline - FAQ
http://www.singaporeair.com/saa/en_UK/content/promo/upgrades/upgrades_earn.jsp - Earning
http://www.singaporeair.com/saa/en_UK/content/promo/upgrades/upgrades_redeem.jsp - Redeeming

Fly with us from 1 Apr to 30 Jun 2009, and earn Free Upgrades to any Singapore Airlines Destination.
To enjoy this offer, all you need to do is enrol as a KrisFlyer member. If you are already a member, you will automatically earn Special Upgrade Points on top of the usual KrisFlyer miles - giving you twice the rewards each time you fly.

Special Upgrade Offer on SQ - limited-time upgrade vouchers - SQTalk
Free Upgrade Promotion - FlyerTalk Forums

2. Will I be eligible for this promotion if I deposit my miles earned by flying Singapore Airlines to an airline partner's frequent flyer programme?
Yes you will. All you need to do is to ensure that your account profile is updated with the membership numbers of your membership in the frequent flyer programmes of KrisFlyer airline-partners. To do so, after you login to your KrisFlyer account, click on 'My Account'. It is part of the Optional Information category. You should also provide your selected frequent flyer programme's membership number when you make your booking.