Update install readme with KF 1.4.0 deployment (kubeflow#752)

* Update install readme with KF 1.4.0 deployment

* Update kfp_tekton_install.md

guides/kfp_tekton_install.md

@@ -76,7 +76,7 @@ To install the standalone Kubeflow Pipelines with Tekton, run the following step
 
 1. Follow the [Kubeflow install instructions](https://www.kubeflow.org/docs/ibm/deploy/install-kubeflow-on-iks/#kubeflow-installation)
    to install the entire Kubeflow stack with `kfp-tekton`.
-   Kubeflow `v1.3.1` uses Tekton `v0.21.0` and `kfp-tekton` `v0.8.0`. <!-- TODO update-->
+   Kubeflow `v1.4.0` uses Tekton `v0.27.0` and `kfp-tekton` `v1.0.0`. <!-- TODO update-->
 
 2. Visit [KFP Tekton User Guide](/guides/kfp-user-guide) and start learning how to use Kubeflow pipeline.
 
@@ -85,7 +85,7 @@ To install the standalone Kubeflow Pipelines with Tekton, run the following step
 
 ## Upgrade to Multi-User KFP-Tekton on Kubeflow
 
-1. If you haven't installed Kubeflow 1.3+, Follow the [Kubeflow install instructions](https://www.kubeflow.org/docs/ibm/deploy/install-kubeflow-on-iks/#kubeflow-installation) to install Kubeflow with multi-user capabilities.
+1. Starting from Kubeflow 1.3 and beyond, both Kubeflow single and multi-user deployment use the multi-user mode of Kubeflow pipelines to support authentication. If you haven't installed Kubeflow, Follow the [Kubeflow install instructions](https://www.kubeflow.org/docs/ibm/deploy/install-kubeflow-on-iks/#kubeflow-installation) to install Kubeflow Pipelines with multi-user capabilities.
 
 2. To upgrade to the Multi-User version of KFP-Tekton, custom task controllers, and core Tekton controller, please run