all subtask of epic reviewed and resolved(if not removed as subtasks)
 Community consultation for behavior for logged-in users started and any follow ups outlined by @CKoerner_WMF have been added here.
[x] T189906 has been completed and VirtualPageViews is enabled on all wikis
[x] Patches relating to T190188 are on English Wikipedia
 @CKoerner_WMF has reviewed blockers and ticked this box personally to say they are correct
 @ovasileva has reviewed blockers and ticked this box personally to say they are correct
 @Tbayer has reviewed blockers and ticked this box personally to say they are correct
 @Jdlrobson has reviewed blockers and ticked this box personally to say they are correct
 @nirzar has reviewed blockers and ticked this box personally to say they are correct
= Acceptance criteria
 All boxes in the blockers have been ticked. We're ready to go!
 Patch is written per developer notes deploying to 10% of English Wikipedia
 Patch is written per developer notes deploying to 50% of English Wikipedia
 Patch is written per developer notes deploying to 100% of English Wikipedia
 Deploy is scheduled and a meeting is added to the calendar. @ABorbaWMF , a design rep and @ovasileva should be available for testing.
= Developer notes
This should be done in **three** deploys - Bump to 10% (0.1) then 50% (0.5) and then 100% (0).
Note: wgPopupsAnonsExperimentalGroupSize should be set to 0 for 100% ('default'). Counter-intuitively this means Popups is enabled to 100% of anons. Note given the value of wmgUsePopups this will not enable Popups for non-wikipedias
= During deploy
 Verify that Page previews is showing on all wikipedias for anonymous users and for logged in (only if opted in) - I suggest testing Spanish, German, Hebrew and English to verify. Be careful to test anonymous behaviour in an incognito window as you may have previously been opted in via the footer)
 Verify that the [[ https://grafana.wikimedia.org/dashboard/db/eventlogging-schema-jumbo?orgId=1&var-datasource=eqiad%20prometheus%2Fops&var-schema=VirtualPageView | rate of events for VirtualPageViews ]] is still at healthy values (estimated average: ~700-800 events/sec; may be above or below that depending on time of day and day of week). Errors are around normal rate.
 Check any change in error rate (and where those errors are coming from)
 Verify that page previews remains disabled on all other projects e.g. Wikidata, Wiktionary
 Green light from @ABorbaWMF to sync
 Green light from @Nirzar to sync
 Green light from @ovasileva to sync
= Post deploy
 T191101 should be resolved.
 https://www.mediawiki.org/wiki/Reading/Web/Release_timeline has been updated
 A formal request for cake has been made - point person @MBinder_WMF
 Parent tasks- both goal and epic are resolved.
 Set up tasks based on community consultation results
 post a gif to the team channel
 Mel and comms are notified
 Short blog post published