# Cesium 1.21 release

**URL:** <https://community.cesium.com/t/cesium-1-21-release/4069>\
**Category:** CesiumJS\
**Created:** [May 2, 2016, 3:27pm UTC](https://community.cesium.com/t/cesium-1-21-release/4069 "2016-05-02T15:27:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Matt\_Amato](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/matt_amato/32/1993_2.png) [@Matt\_Amato](https://community.cesium.com/u/Matt_Amato)\
**Post date:** [May 2, 2016, 3:27pm UTC](https://community.cesium.com/t/cesium-1-21-release/4069/1 "2016-05-02T15:27:14Z")

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Cesium 1.21 is now available: [http://cesiumjs.org/downloads.html](http://cesiumjs.org/downloads.html)

This is mostly a bugfix release as we gear up for a major 1.22 release which will include some major features, such as shadows and (possibly) models in 2D and Columbus View.

Thanks,

Matt

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**Author:** ![Scott\_Mills](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_mills/32/2185_2.png) [@Scott\_Mills](https://community.cesium.com/u/Scott_Mills)\
**Post date:** [May 6, 2016, 2:54am UTC](https://community.cesium.com/t/cesium-1-21-release/4069/2 "2016-05-06T02:54:45Z")

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Is there any timeframe for locking entities to terrain yet?

Also, do you know if it'll work with entities using TimeIntervalCollectionPositionProperty as their location?

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**Author:** ![Matt\_Amato](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/matt_amato/32/1993_2.png) [@Matt\_Amato](https://community.cesium.com/u/Matt_Amato)\
**Post date:** [May 9, 2016, 6:07pm UTC](https://community.cesium.com/t/cesium-1-21-release/4069/3 "2016-05-09T18:07:19Z")

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We want to have entities on terrain finished for 1.22, but there are still several hurdles that need to be overcome so there’s a good chance it won’t be until 1.23 or 1.24. Our goal is to have everything that works without terrain to work with terrain, but there will definitely be caveats (which we will make clear). Time-dynamic data shouldn’t be a problem, but anything that deals with polylines/paths will not support terrain for the first version.

You can follow along with [https://github.com/AnalyticalGraphicsInc/cesium/pull/3406](https://github.com/AnalyticalGraphicsInc/cesium/pull/3406) to see the latest status.

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**Author:** ![Scott\_Mills](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_mills/32/2185_2.png) [@Scott\_Mills](https://community.cesium.com/u/Scott_Mills)\
**Post date:** [May 11, 2016, 4:12am UTC](https://community.cesium.com/t/cesium-1-21-release/4069/4 "2016-05-11T04:12:16Z")

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That's great news! We are keen to add a feature to our application that relies on that functionality.

Thanks for your response.