oh eye, the Ts&Cs need a look

"Dear BugAlugs
As a Gold Guest List Member, you receive a Gold Upgrade voucher for one or two people when you reach at least 2,500 Tier Points. This entitles you (and a companion) to a free cabin upgrade* when you next book British Airways flights with us or a Travel Agent.

We've listened to your feedback and are making improvements to the voucher booking process. If you book with a Travel Agent you no longer need to use it at the time of booking; simply contact us directly up to 24 hours before your flight to upgrade. If you'd like to make any further changes after you've redeemed your voucher, please contact us directly. Your dedicated Gold telephone number is XXXXX or if calling from overseas XXXX"

That means it's now easier than ever to enjoy your upgrade. Please note the voucher is only valid if you - the Executive Club Member – is travelling on the flight and is subject to availability."

I was sure that I can already use a voucher to upgrade a booking after a TA has booked it if its an upgrade with avios UUA (or a GUF) ... does this now mean we can upgrade a TA booking into the next fare class , not an avios bucket?