On 1 August 2011 intercontinental upgrade awards from the highly discounted Business Class booked in Z/Class, to First Class will require an additional 15,000 award miles. This applies to bookings on Lufthansa and SWISS flights operated flights.
On SWISS flights the upgrade levels required for Z/Class bookins will also apply for upgrades from P/Class as of 1 August 2011.
The mileage level for upgrades from the remaining Business Class booking classes (J, C and D) remains unchanged.
You can find out how many award miles you need for your upgrade in the upgrade award chart.