Hi Kotesto!
I publish a new asset pack every month. Every time a new asset pack is released the bundle price increases accordingly.
Buying the bundle doesn't give access to new releases. New asset packs published after purchasing the bundle have to be bought individually.
Another option to get newly released asset packs is through my Patreon. All my Patrons get a new asset pack every month at no extra cost, apart from the Patreon subscription, along with other perks.
If you have any other questions related to the bundle or the asset packs do not hesitate to ask me anytime.