anchor.diff:  * Add Needs Methods to Painless Script Context Factories {pull}25267[#25267]
   * Support Script Context Stateful Factory in Painless {pull}25233[#25233]
   * Generate Painless Factory for Creating Script Instances {pull}25120[#25120]
  +* Update Painless to Use New Script Contexts {pull}25015[#25015]
   * Optimize instance creation in LambdaBootstrap {pull}24618[#24618]
   
   Plugin Repository GCS::
  
positive.code: 
  Aliases::
  * Wrong behavior deleting alias {pull}23997[#23997] (issues: {issue}10106[#10106], {issue}23960[#23960])
  
  Index APIs::
  * Remove (deprecated) support for '+' in index expressions {pull}25274[#25274] (issue: {issue}24515[#24515])
  
negative.code: Stats::
  * Update `IndexShard#refreshMetric` via a `ReferenceManager.RefreshListener` {pull}25083[#25083] (issues: {issue}24806[#24806], {issue}25052[#25052])
  
  Translog::
  * Translog file recovery should not rely on lucene commits {pull}25005[#25005] (issue: {issue}24950[#24950])
  
  
  
  [[bug-6.0.0-beta1]]
  