Since the bounties are (partially) backed by bitcoin in the Cuckoo Cycle Bounty Fund,
the recent boost in bitcoin value allows me to increase the bounties by 50%:

performance improvement   4x           2x           sqrt(2)x
CPU                                    $6000     $3000     $1500
TMTO                                  $6000     $3000     $1500
GPU                                    $3000     $1500     $ 750

Happy bounty hunting...