# Overview
For the complete and simple summary of the changes below see the[ v3.3.0 Changelog](🔗).
This document is an extension of the above Changelog that gives more context on these changes. It is for users of Blend's APIs to help you understand:
Changes that impact the behavior of the API in this version
New features and functionality that are available to you in v3.3.0
Don't forget that **v2.X.X functionality** will no longer be supported as of **March 31st, 2021.**
# Announcements
## New Disclosures Routes Added
In order to allow for better tracking we decided to fully embrace the envelopes concept. These envelopes are matched up to the tasks a borrower needs to complete in order to act on a set of documents. This allows for our lenders to track wet-sign, e-sign, and SSO-based transactions the same way. This means that API users will explicitly state what types of envelopes they want created, and be able to track recipient actions by envelope.
We changed the POST schema to be recipient-focused instead of document focused. This change was made because all SSO-based envelopes don't have documents. In order to keep the schemas consistent we chose to make the order package → envelope(s) → recipient(s) → metadata. Where metadata could be documents, documents with coordinates, or an SSO url.
We changed the POST API to be synchronous (all the previous versions are asynchronous). The new endpoints are as follows:
Added GET /packages
Added POST /packages
Added GET /packages/:id
Added PATCH /packages/:id
For more information on how to use these APIs see our guides [Creating a Document Package](🔗) [Managing a Document Package](🔗)
## Tax Transcript Functionality Added
Added GET /tax-transcripts
Tax-transcript metadata added to GET /documents/:id/metadata
# What You Need to Do to Upgrade to v3 or above
## Getting Started with your Upgrade
v2.0.0-v2.3.0 of Blend's APIs and Events will be fully deprecated (turned off) on March 31st, 2021. Customers and Partners need to upgrade any API calls they are currently making and any webhooks they are processing to support v3.0.0 or above by March 31st, 2021.