Merge pull request #375 from stan-dev/release-2.10

Preparation of loo release 2.10

Author: jgabry

.Rbuildignore

@@ -25,3 +25,5 @@ vignettes/loo2-non-factorized_cache/*
 ^_pkgdown\.yml$
 ^pkgdown$
 ^touchstone$
+^.git-blame-ignore-revs
+^notes-release.md

DESCRIPTION

@@ -1,8 +1,8 @@
 Type: Package
 Package: loo
 Title: Efficient Leave-One-Out Cross-Validation and WAIC for Bayesian Models
-Version: 2.9.0.9000
-Date: 2025-12-22
+Version: 2.10.0
+Date: 2026-06-24
 Authors@R: c(
     person("Aki", "Vehtari", email = "Aki.Vehtari@aalto.fi", role = "aut"),
     person("Jonah", "Gabry", email = "jgabry@gmail.com", role = c("cre", "aut")),

NEWS.md

@@ -1,16 +1,15 @@
-# loo (development version)
+# loo 2.10.0
+
+* Updates to `loo_compare` output by @jgabry, @avehtari, @florence-bockting in #300: 
+  - new output columns `p_worse`, `diag_diff`, `diag_elpd`
+  - returned object is now a `data.frame` instead of a `matrix`
+* Add new `kfold.print` method by @florence-bockting in #342
+* Add touchstone performance benchmarks by @VisruthSK in #352
+* Use `posterior::gpdfit` and `posterior::qgeneralized_pareto` by @avehtari in #305
+* Fix bug in IS method error message + documentation typos by @ishaan-arora-1 in #326
+* Shortened `?loo_subsample` title and improved description by @vinniott in #339
+* Add AI contribution policy by @florence-bockting in #361
 
-## Breaking changes
-
-* `loo_compare()` now returns a data frame instead of a matrix and has 
-  additional columns. Code that relies on matrix-specific behaviour will need to
-  be updated accordingly by @jgabry, @avehtari, @florence-bockting in #300
-
-## New features
-
-* `loo_compare()` output now includes additional columns: `p_worse`,
-  `diag_diff`, and `diag_elpd`, providing richer diagnostics for model
-  comparison by @florence-bockting in #300
 
 # loo 2.9.0