Tamashii Nations is essentially going back from the older releases and releasing newer, updated versions even if they're slightly altered based on different source material. (Super Saiyan Vegeta and Super Saiyan Son Gohan specifically which happen to be labeled the same as their older releases.) Scouter Vegeta will be the 1st actual upgraded "redone" release along with Super Saiyan 3 Goku. (Unless they add the kanji for Battle of Gods/Dragon Ball Super.)
Other than Super Warrior Awakening Super Saiyan Goku, who ushered in the newer upgrades, it's not that bad of a question to ask why the Cell Saga was refocused on so soon before Tamashii Nations focused on other Sagas to implement the upgrades.
They are redoing SS3 Goku as well? Oh brother...