# Datomic Cloud 668-8927

**URL:** <https://forum.datomic.com/t/datomic-cloud-668-8927/1445>\
**Category:** Announcements\
**Created:** [May 14, 2020, 4:04pm UTC](https://forum.datomic.com/t/datomic-cloud-668-8927/1445 "2020-05-14T16:04:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jaret](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.datomic.com/jaret/32/45_2.png) [@jaret](https://forum.datomic.com/u/jaret)\
**Post date:** [May 14, 2020, 4:04pm UTC](https://forum.datomic.com/t/datomic-cloud-668-8927/1445/1 "2020-05-14T16:04:39Z")

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This message covers changes in this release. For a summary of critical release notices, see  
[https://docs.datomic.com/cloud/releases.html#critical-notices](https://docs.datomic.com/cloud/releases.html#critical-notices)

### 05/14/2020 - 668-8927 - Compute Update

- New feature: [qseq](https://docs.datomic.com/cloud/query/query-executing.html#qseq)
- New feature: [index-pull](https://docs.datomic.com/cloud/query/query-index-pull.html)
- New feature: [xform](https://docs.datomic.com/cloud/query/query-pull.html#xform-option)
- Enhancement: Improve index efficiency.
- Enhancement: Improve performance of pull in queries.
- Enhancement: Improve internal record keeping of active databases that could lead to spurious error messages.
- Enhancement: Base AMI is now sourced from Amazon Linux 2, and includes recent security updates

> **Upgrade:** As recommended by AWS, we have upgraded our base AMI to Amazon Linux 2 [[Update on Amazon Linux AMI end-of-life | AWS News Blog](https://aws.amazon.com/blogs/aws/update-on-amazon-linux-ami-end-of-life/)]. This new AMI includes a breaking change to the linux netcat utility that Ions use to deploy new code to a cluster. We encourage all users of Ions to upgrade to [version 0.9.265](https://docs.datomic.com/cloud/releases.html#ion-dev-265) or later of ion-dev prior to upgrading to this release.