Last week we released Riak TS 1.5.1. This patch release includes several improvements and bug fixes. We recommend everyone upgrade to Riak TS 1.5.1 when you have the opportunity. Please see the release notes  and download page 
Riak TS Enterprise customers can download Riak TS from your Zendesk page (valid Basho Zendesk account is required).
If you run Riak TS on AWS, you can also update using the latest AMI .
As always, we would like to hear your feedback, suggestions or bug reports.