Merge pull request #17478 from seamuslee001/document_recent_merge_wordpress_notice

Document recent merge in regards to select fields for export screen a…

release-notes/5.26.0.md

@@ -21,6 +21,12 @@ Released June 3, 2020
 | Introduce features?                                             | **yes** |
 | Fix bugs?                                                       | **yes** |
 
+## NOTICE: WordPress Service URLs
+
+The upcoming release of WordPress 5.5 ([ETA August 2020](https://make.wordpress.org/core/5-5/)) requires changes to several CiviCRM URLs. CiviCRM 5.26+ adopts a new URL convention. For old URLs, there is transitional support that will work for most web-based visitors. However, this may not be sufficient for *external service integrations* (e.g. certain payment processors or email relays which send notifications to CiviCRM).
+
+Administrators should promptly assess and update any external services which submit notifications to their CiviCRM-WordPress sites. For more information, see the blog post [CiviCRM 5.26 and WordPress: Important notice](https://civicrm.org/blog/kcristiano/civicrm-526-and-wordpress-important-notice).
+
 ## <a name="features"></a>Features
 
 ### Core CiviCRM
@@ -336,6 +342,12 @@ Released June 3, 2020
 
   Ensures that the `hook_civicrm_tokenValues` is passed the proper values.
 
+- **Fix slowness in opening the select fields for export screen after an advanced search
+  ([dev/core#1725](ttps://lab.civicrm.org/dev/core/-/issues/1725):
+  [17444](https://github.com/civicrm/civicrm-core/pull/17444))**
+  Fixes a recent regression following the updating of the select fields export UI which on certain
+  sites slowed down the loading of the select fields screen significantly
+
 ### CiviContribute
 
 - **Contribution Detail Report gives incorrect results when `force=1`