diff --git a/DESCRIPTION b/DESCRIPTION
index 47572dd9..f7055089 100644
--- a/DESCRIPTION
+++ b/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: 2026-06-11
 Authors@R: c(
     person("Aki", "Vehtari", email = "Aki.Vehtari@aalto.fi", role = "aut"),
     person("Jonah", "Gabry", email = "jgabry@gmail.com", role = c("cre", "aut")),
diff --git a/NEWS.md b/NEWS.md
index 4d9a3af0..3d4e31da 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,16 +1,13 @@
-# loo (development version)
+# loo 2.10.0
 
-## Breaking changes
+* Fix bug in IS method error message + documentation typos by @ishaan-arora-1 in #326
+* Shortened `?loo_subsample` title and edited description by @vinniott in #339
+* Add new `kfold.print` method by @florence-bockting in #342
+* Add touchstone by @VisruthSK in #352
+* Use `posterior::gpdfit` and `posterior::qgeneralized_pareto` by @avehtari in #305
+* Update `loo_compare` output by @jgabry, @avehtari, @florence-bockting in #300
+* Add AI contribution policy by @florence-bockting in #361
 
-* `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
 
diff --git a/notes-release.md b/notes-release.md
new file mode 100644
index 00000000..711180c2
--- /dev/null
+++ b/notes-release.md
@@ -0,0 +1,134 @@
+## Updating DESCRIPTION, NEWS
++ changed in DESCRIPTION: version and date
++ update NEWS.md
+
+## Update cran-comments
++ send to @jgabry
+
+## Running reverse dependency checks
++ flocker 0.1.0 still fails but on GitHub is already an updated release 
+(it is just not yet in Cran)
++ clmstan 0.1.1 still fails as expected as we were not able to reach the 
+author
+
+## Running `devtools::check_win_devel()`
++ @jgabry did you got a message with the tar file via e-mail?
+
+```
+> withr::with_envvar(c("NOT_CRAN" = "true"), devtools::check_win_devel())
+Building windows version of loo (2.10.0)
+ℹ Using R-devel with win-builder.r-project.org.
+Email results to <REMOVED>?
+
+1: I forget
+2: Nope
+3: Yeah
+
+Selection: 
+3
+── R CMD build ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
+✔  checking for file ‘/u/21/wa.bocktif1/unix/GitHub2/loo/DESCRIPTION’ ...
+─  preparing ‘loo’: (3.3s)
+✔  checking DESCRIPTION meta-information ...
+─  installing the package to build vignettes
+✔  creating vignettes (49m 41.6s)
+─  checking for LF line-endings in source and make files and shell scripts (358ms)
+─  checking for empty or unneeded directories
+─  building ‘loo_2.10.0.tar.gz’
+   Warning: invalid uid value replaced by that for user 'nobody'
+   Warning: invalid gid value replaced by that for user 'nobody'
+   
+──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
+ℹ Check <REMOVED> for the results in 15-30 mins (~06:59 ).
+```
+
+## Running `devtools::check_mac_release()`
++ seems to be all fine
++ tar file is in this repo: `results.tar.bz2`
+
+```
+> withr::with_envvar(c("NOT_CRAN" = "true"), devtools::check_mac_release())
+macOS builder results
+Build system: r-release-macosx-arm64|4.6.0|macosx|macOS 26.2 (25C56)|Mac mini|Apple M1||en_US.UTF-8|macOS 14.4|clang-1700.6.3.2|GNU Fortran (GCC) 14.2.0
+
+You can download a full tar ball results.tar.bz2 which contains the check results, tests, installed packages and binaries. A subset of the files are shown below.
+
+* using log directory ‘/Volumes/PkgBuild/work/1781534234-1930b57b62ecdbc5/packages/sonoma-arm64/results/4.6/loo.Rcheck’
+* using R version 4.6.0 Patched (2026-04-24 r89963)
+* using platform: aarch64-apple-darwin23
+* R was compiled by
+    Apple clang version 17.0.0 (clang-1700.3.19.1)
+    GNU Fortran (GCC) 14.2.0
+* running under: macOS Tahoe 26.2
+* using session charset: UTF-8
+* current time: 2026-06-15 14:37:37 UTC
+* checking for file ‘loo/DESCRIPTION’ ... OK
+* checking extension type ... Package
+* this is package ‘loo’ version ‘2.10.0’
+* package encoding: UTF-8
+* checking package namespace information ... OK
+* checking package dependencies ... OK
+* checking if this is a source package ... OK
+* checking if there is a namespace ... OK
+* checking for executable files ... OK
+* checking for hidden files and directories ... NOTE
+Found the following hidden files and directories:
+  .git-blame-ignore-revs
+  .agents
+  .agents/skills/r-cli-app/.evals
+These were most likely included in error. See section ‘Package
+structure’ in the ‘Writing R Extensions’ manual.
+* checking for portable file names ... OK
+* checking for sufficient/correct file permissions ... OK
+* checking whether package ‘loo’ can be installed ... [2s/2s] OK
+* checking installed package size ... OK
+* checking package directory ... OK
+* checking ‘build’ directory ... OK
+* checking DESCRIPTION meta-information ... OK
+* checking top-level files ... OK
+* checking for left-over files ... OK
+* checking index information ... OK
+* checking package subdirectories ... OK
+* checking code files for non-ASCII characters ... OK
+* checking R files for syntax errors ... OK
+* checking whether the package can be loaded ... [0s/0s] OK
+* checking whether the package can be loaded with stated dependencies ... [0s/0s] OK
+* checking whether the package can be unloaded cleanly ... [0s/0s] OK
+* checking whether the namespace can be loaded with stated dependencies ... [0s/0s] OK
+* checking whether the namespace can be unloaded cleanly ... [0s/0s] OK
+* checking loading without being on the library search path ... [0s/0s] OK
+* checking whether startup messages can be suppressed ... [0s/0s] OK
+* checking dependencies in R code ... OK
+* checking S3 generic/method consistency ... OK
+* checking replacement functions ... OK
+* checking foreign function calls ... OK
+* checking R code for possible problems ... [2s/2s] OK
+* checking Rd files ... [0s/0s] OK
+* checking Rd metadata ... OK
+* checking Rd cross-references ... OK
+* checking for missing documentation entries ... OK
+* checking for code/documentation mismatches ... OK
+* checking Rd \usage sections ... OK
+* checking Rd contents ... OK
+* checking for unstated dependencies in examples ... OK
+* checking contents of ‘data’ directory ... OK
+* checking data for non-ASCII characters ... [0s/0s] OK
+* checking LazyData ... OK
+* checking data for ASCII and uncompressed saves ... OK
+* checking R/sysdata.rda ... OK
+* checking installed files from ‘inst/doc’ ... OK
+* checking files in ‘vignettes’ ... OK
+* checking examples ... [1s/1s] OK
+* checking for unstated dependencies in ‘tests’ ... OK
+* checking tests ... [15s/8s] OK
+  Running ‘testthat.R’ [15s/8s]
+* checking for unstated dependencies in vignettes ... OK
+* checking package vignettes ... OK
+* checking re-building of vignette outputs ... [10s/16s] OK
+* checking PDF version of manual ... [3s/3s] OK
+* DONE
+Status: 1 NOTE
+* using check arguments '--no-clean-on-error '
+* elapsed time (check, wall clock): 0:51
+* result classification: OK, errors:no, warnings:no, notes:yes
+```
\ No newline at end of file
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