> For the complete documentation index, see [llms.txt](https://niftsy-protocol-niftsy-1.gitbook.io/niftsy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://niftsy-protocol-niftsy-1.gitbook.io/niftsy/tutorials/subscription-service/version-1/release-notes.md).

# Release notes

**Implemented functionality:**

* The architecture of smart-contracts has been redesigned. Added ability to keep track of tariffs and subscriptions for different services
* Multiple tariffs added for subscription to services
* Set up tariffs that entitle user to use service a certain number of times
* Usage of different ERC-20 tokens to purchase subscriptions to services. The tokens are added to the collateral created for the purchaser (buyer) wNFT after the subscription is purchased
* Option to purchase a subscription for a third party has been added