# Changelog

* 2024 10-22: Added header bidding flag to 2.3 and 2.6 Bid Request.
* 2024-10-16: Added `user.consent` to Exchange [2.6 Bid Request](/en/partners/exchange/openrtb/2.6-bid-request/#bidrequestuser-object) and [2.3 Bid Request](/en/partners/exchange/openrtb/2.3-bid-request/#bidrequestuser-object).
* 2024-09-13: Added detailed [double end card](/en/partners/exchange/double-end-card/) integration documentation.
* 2024-06-14: Added [Auto Store](/en/partners/exchange/autostore/) integration documentation and [SKOverlay Display and Behavior](/en/partners/exchange/skoverlay-support/#display-and-behavior) information.
* 2024-06-10: Added double end card information to the Creative Format's [Vast End Card Behavior](/en/partners/exchange/creative-formats/#end-card-behavior).
* 2024-05-20: Added StoreKit Rendered Ad information to [SKAdNetwork Support](https://docs.chartboost.com/en/partners/exchange/ios-14-skadnetwork-attribution/#skadnetwork-support)
* 2024-04-24: Added `format` to `BidRequest.imp[].banner (Object)` in [OpenRTB 2.6 Bid Request](/en/partners/exchange/openrtb/2.6-bid-request/#bidrequestimpbanner-object). Updated example requests to [Banner placement (320x50)](/en/partners/exchange/openrtb/2.6-bid-request/#banner-placement-320x50) and [Interstitial placement: Display only (MRAID)](/en/partners/exchange/openrtb/2.6-bid-request/#interstitial-placement-display-only-mraid)
* 2024-01-05: Added IAB11-1, IAB11-2, IAB11-3, IAB11-5, IAB12-1, IAB12-2, IAB12-3 to the [Blocked Categories on Chartboost Exchange](/en/partners/exchange/creative-content-guidelines/#blocked-categories-on-chartboost-exchange).
* 2023-12-04: Added SKAN Product Page ID (skadn.productpageid) as a Bid Response parameter for SKADN version 2.2, 3.0, 4.0
* 2023-11-28: Added SKAN version 4.0 OpenRTB documentation and examples.
* 2023-11-07: Added OM SDK information.
* 2023-10-24: Added IAB11, IAB11-4, and IAB12 back into Exchange-Wide Blocked Categories.
* 2023-10-17: Added impression tracker macro support information, changed ext.close_button_corner to ext.buttonPlacement.
* 2023-09-25: Added a note on bitrate under the VAST creative format section. 
* 2023-09-25: Updated 2.6 and 2.3 `BidResponse` specs to contain additional supported fields.
* 2023-09-25: Added 2.6 specs and updated 2.3 `BidRequest` & `BidResponse` spec fields. 
* 2023-09-01: Updating MRAID and Video sections to include details about userflow.
* 2023-08-29: Added IAB7-42 and IAB8-18 to Exchange-Wide Blocked Categories.
* 2023-08-18: Updated Creative Formats section to include information about Native.
* 2023-08-11: Updated Bid Request `cat` field with information on 42Matters integration, and updated Bid Request samples.
* 2023-08-01: Updated two new Loss Notification codes (502, 103).
* 2023-07-28: Removed IAB11, IAB11-4, IAB12 from Exchange-Wide Blocked Categories.
* 2023-07-14: Fixed broken JSON.
* 2023-07-06: Updated Analytics section, Partner Reporting API section, Blocked Attributes on Chartboost Exchange, contact email.
* 2023-05-03: Added Sections Blocked Categories + Blocked Attributes On the Exchange.
* 2023-01-04: Added new VAST 4 protocols, updated corresponding bid request samples.
* 2022-12-02: Added section on [SKOverlay support](/en/partners/exchange/skoverlay-support/) (available as of iOS SDK 9.1).
* 2022-10-06: Added section on [VAST End Cards](/en/partners/exchange/creative-formats/#vast-end-cards).
* 2022-09-19: Added new LURL `${AUCTION_LOSS}` codes. Updated video `maxduration` information.
* 2022-05-24: Updated Support for NURL as win notification. Added section for win notification.
* 2022-05-05: Added Bid Response specification fields `cat`, `maxbitrate`, `playbackmethod`, and updated Bid Response samples.
* 2022-04-13: Added link to advertiser creative content guidlines.
* 2022-03-07: Added pmp (private marketplace) to bid request specification.
* 2022-02-07: Added `imp.clickbrowser:1` to bid request specification.
* 2022-02-03: Added section to Bid Request specification detailing the contents of the `ext.schain` object, fixed anchor link.
* 2021-07-21: Updated iOS SKAN documentation, detailed support for SKAdNetwork version 3.0.
* 2021-06-16: Added `${MIN_BID_TO_WIN}` feature notes to Loss Notifications section.
* 2021-05-19: Added SKAN version 2.2+ OpenRTB documentation and examples.
* 2021-03-19: Added clarification on acceptable / prohibited use of iframes in ad markup.
* 2020-11-02: Added [section](/en/partners/exchange/ios-14-skadnetwork-attribution/) detailing bid request & response requirements related to iOS 14+ SKAdNetwork Attribution.
* 2020-12-04: Added policy information regarding [audio in HTML/MRAID creatives](/en/partners/exchange/creative-formats/#html-creatives-containing-audio).
* 2020-12-08: Updated max Content-Length size to 20MB for Exchange bid responses.