The new versions just got into Amazon today... those links below:
Slimfit Backpack XX https://www.amazon.com/dp/B07KSQXK73
Slimfit Backpack II https://www.amazon.com/dp/B07KWH4L3N
The new Board Cover and Charger Pouch are only available through BrdBag.com today but will be up on Amazon too in the next few days.
Edit: Links for Board Cover and Charger Pouch
I also have boosted backpack it's really nice design and quality, but the boardbag have different function, its more suitable if you traveling by plane and you want to check in your boostedboard, you'll need this kind of bag to secure your board from scratch and dent
note : also have the 1st / 2nd gen boardbag, i bought it because i need to sent my boosted from california to jakarta, indonesia by plane