upgrade backup exec 2012 to 2015

Hello all,

We are currently using backup exec 2012 on windows storage server 2008 r2 standard x64 edition

and i digup some article on how to upgrade to the current version

" to upgrade from Backup Exec 12.5 to Backup Exec 15, you must first upgrade to a version such as Backup Exec 14 before you can upgrade to Backup Exec 15. "

my question is since it's 64 bit OS can we upgrade 15 now or do we have to wait till end of summer

" A Backup Exec 15 software upgrade image for the Backup Exec appliance will be available summer, 2015.A Backup Exec 15 software upgrade image for the Backup Exec appliance will be available summer, 2015."

and what about licensing do i have to update the key