This page represent a comparison between Legacy Stack (aka "4.x" stack) vs New Stack (aka "5.x"- or "6.x"-stack) and will be attempted to be kept up to date as new stack matures. Note: Features mentioned on the black list are still available in 5.x, but via legacy kernel so you will need to use "pure legacy" or a mixed setup using "legacy fallbacks". 

For list of Symfony features supported out of the box, see here.

Known existing integration (white list):

5.x Feature4.x FeatureNote/Limitation
Content Model
5.x aimed at not adding any features in the content/data model that would lead to backwards compatibility breaks, new features will instead be introduced when we reach 6.x and beyond.
Content(Content) Object

 

Content RelationsObject Relations 
Field(Content) AttributeMissing FieldTypes will cause eZ Publish to return exception, this can be avoided by implementing<TODO:Add link when article on this> the FieldType or configuring it as "NullType"
FieldTypeDataTypeSee FieldTypes for list of supported types, known unsupported FieldTypes are mentioned in Known issues
LocationsNode

 

Section 

 

ContentType(Content) Class 
FieldDefinition(Content) Class Attribute 
FieldGroups(Content) Class Attribute Grouping 
ObjectStateObjectState 
UrlAlias  
UrlWildcard  
Language  
User  
UserGroup Can by design (and intention) only have one location in 5.x when using Public API UserService
Policy  
Policy Limitation  
Role  
Role Limitation  
Role Assignment Currently not possible to delete specific assignment by id, can be deleted by Role and User.
   
Core  
Public APIn/aLegacy/4.x does not have a official public API, almost all internal functions are exposes publicly
REST 5.1 and higher includes a working read/write REST v2 API
Development environmentDevelopment modeIn 5.x this is provided by Symfony, and web debugger is extended by eZ Publish, additional debugging planned and in progress as "pull request".
   
Web stack 5.x web stack is Symfony with several eZ features on top
ControllersModules 
BundlesExtensions 
(Twig) Template system(eZ) Template system 
View ProviderOverride systemRestricted to viewLocation in 5.0, viewContent added in 5.1, for changing presentation logic.
Controller overriden/a5.2 added feature for being able to also use override system of View Provider to also be able to override content controller under your own conditions to be able to modify behavior.
Theme systemDesign systemPlanned to use LiipThemeBundle, potentially in version 5.3.
HTTP CacheView- / Static- CacheFor anonymous users with content aware caching since 5.0, also for logged in users with context aware caching since 5.2
SiteAccess  
Site(Access)Groupingn/aNew in 5.x
CSRFeZ FormTokenProvided by Symfony
   
Data  
Persistence cacheCluster- / Class- / ClassAttribute- / var- / "Global"- cacheIntroduced in 5.1, multi repository (aka multi-db) setups support added in 5.2.
IOCluster (-ing of files)Currently uses 4.x cluster system, new and simpler file clustering is planned for 6.x.
Multi RepositoryMulti-dbSince 5.0, Persistence cache does not support this in 5.1.
   

Known missing in Symfony stack (black/grey list):

Note: Missing integration doesn't mean the system can not use the feature in a new installation relying on the new stack, but if it needs, it shall rely on a fallback to the legacy stack. For instance: a website with a shop system could be done in twig and rely on legacy only for the fallback for shop parts.

FeatureNote/Limitation
Core 
RatingUser Rating not currently supported by API (the service to deal with ratings, rating field type already exists), planned to be implemented later when some convention for FieldType provided API's are established.
ShopNo shop or field(/data) types related to shop currently supported by API, see Known issues. This is planned for "6.x" or a release shortly thereafter.
eZCommentezcomments is not supported by API, and is not planned to be supported either. Instead of having it part of the API, it was replaced in 5.2 with a CommentsBundle that will provide an agnostic system to integrate 3rd party comment services. Out of the box supporting Disqus and Facebook integration but can via custom integration can also work with other 3rd party systems (example: service, content model based comments or even ezcomments)
Content EditingContent editing module is not implemented yet, but custom needs can for instance be solved with Public API+Symfony controllers or use of javascript REST client + REST API.
Module PermissionsController / Bundle Permissions is not integrated with eZ Publish permission system yet, currently standard Symfony firewall rules need to be used. Public API however has full support for permissions and limitations, and is as of 5.2 known to support legacy most edge cases.
UrlAlias RoutingUrlAlias has the same model as before and hence does not support routing directly to a bundle:controller:action
WorkflowPlanned for future version, see Shop. Simple workflows already possible by using Symfony evens and Public API "Signals".
Information CollectorPlanned as a Form builder UI basically using Symfony Forms + swiftmailer for mail transport, might reuse content types similarly to how Information Collector did it.
Package systemPlanned to return as a import/export system which uses either API or SPI directly to replicate some or full amount of content from one repository to another, preferred format: XML using XML reader/writer.
Menu managementNot currently planned, might come back in the form of page layout designer (using similar concepts as ezflow).
PDF ExportNot currently planned, could be re-implemented outside of Core
RSS feedsCurrently no API for managing RSS feeds, REST view can be used as basis of feeds.
Frontend Editing

See "Content Editing".

Be aware that eZ Flow timeline feature is not available in the legacy admin (only in front end editing), hence not usable on the new stack.

PreviewPlanned for 5.3, versions before that uses legacy for preview.
SearchSearch API exists, but front end is currently using legacy fallback (ezfind & ezsearch) and 5.x Search SPI Solr implementation is currently work in progress but rapidly maturing as of 5.2.
User moduleUser login, login handlers, change-password, forgot-password, register, profile and editing currently uses legacy fallback, planned for 5.3
oAuth 2.0oAuth 1.0 supported in REST v1 in legacy, planned for new stack and REST v2 for future 5.x version.
  
Extensions(aka Bundles)
eZ TagsPlanned for future 5.x version, still community supported in legacy stack on 5.x.
eZ SIeZ SI is purely legacy, not required in Symfony as it support ESI natively. ez SI is still supported in legacy stack on 5.x.
eZ Content stagingNo equivalent yet on the new stack, still supported in legacy stack on 5.x.
eZ Style editorNo equivalent on the new stack, still supported in legacy stack on 5.x up until 5.1.
eZ SurveyNo equivalent yet on the new stack, still supported in legacy stack on 5.x.

For additional on supported legacy features see: http://doc.ez.no/List-of-eZ-Publish-extensions-and-their-support-options