Doc: reference 9.8.1

Author: rouault

docs/source/download.rst

@@ -26,7 +26,7 @@ Download
 Current Release
 --------------------------------------------------------------------------------
 
-* **2026-03-02** `proj-9.8.0.tar.gz`_ (`md5`_)
+* **2026-04-10** `proj-9.8.1.tar.gz`_ (`md5`_)
 * **2025-12-01** `proj-data-1.24.tar.gz`_
 
 .. note::
@@ -40,6 +40,7 @@ Current Release
 Past Releases
 --------------------------------------------------------------------------------
 
+* **2026-03-02** `proj-9.8.0.tar.gz`_
 * **2025-12-01** `proj-9.7.1.tar.gz`_
 * **2025-09-15** `proj-9.7.0.tar.gz`_
 * **2025-06-06** `proj-9.6.2.tar.gz`_
@@ -130,7 +131,8 @@ Past Releases
 * **2018-03-01** `proj-datumgrid-oceania-1.1.zip`_
 * **2018-03-01** `proj-datumgrid-oceania-1.0.zip`_
 
-.. _`md5`: https://download.osgeo.org/proj/proj-9.8.0.tar.gz.md5
+.. _`md5`: https://download.osgeo.org/proj/proj-9.8.1.tar.gz.md5
+.. _`proj-9.8.1.tar.gz`: https://download.osgeo.org/proj/proj-9.8.1.tar.gz
 .. _`proj-9.8.0.tar.gz`: https://download.osgeo.org/proj/proj-9.8.0.tar.gz
 .. _`proj-9.7.1.tar.gz`: https://download.osgeo.org/proj/proj-9.7.1.tar.gz
 .. _`proj-9.7.0.tar.gz`: https://download.osgeo.org/proj/proj-9.7.0.tar.gz

docs/source/news.rst

@@ -3,6 +3,54 @@
 News
 ###############################################################################
 
+9.8.1
+++++++++++++++++++++
+*April 10th 2026*
+
+Warning
+-------
+
+It was discovered after the PROJ 9.8.0 release that several EPSG updates introduced
+after EPSG v12.033 - notably the introduction of national realizations of ETRS89
+(ETRS89-XXX […] where XXX is the 3-letter ISO country code) - caused backward
+incompatibilities in some workflows involving the ETRS89 CRS.
+
+In particular, transformations between ETRS89 and national CRSs based on other
+datums are known to be affected for Austria, Belgium, Catalonia, the Netherlands,
+Romania, and Serbia. See #4736 for more details.
+
+While we intend to resume tracking the latest EPSG releases in future PROJ
+versions, the safest solution identified so far to address these regressions is to
+**revert the EPSG related content of its database from EPSG v12.049 to v12.029**,
+where v12.029 was the version distributed with PROJ 9.7.1
+
+As a consequence of this revert, the EPSG datum and CRS records introduced in
+PROJ 9.8.0, which are mostly related to the new ETRS89-XXX datum and CRS, are no
+longer available in PROJ 9.8.1.
+
+Updates
+-------
+
+* Database: **Revert content from EPSG v12.049 to v12.029** (`#4741 <https://github.com/OSGeo/PROJ/issues/4741>`_)
+  See above warning for more details.
+
+* CMake: handle deprecated SQLite::SQLite3 target in CMake 4.3 (`#4694 <https://github.com/OSGeo/PROJ/issues/4694>`_)
+
+Bug Fixes
+---------
+
+* Make sure that epoch is set in more scenarios of time-dependent transformations (`#4688 <https://github.com/OSGeo/PROJ/issues/4688>`_)
+
+* pj_obj_create: use database context if already open for grid name resolution (`#4703 <https://github.com/OSGeo/PROJ/issues/4703>`_)
+
+* Chain vertical CRS transformations through intermediate same-datum vertical CRS (`#4711 <https://github.com/OSGeo/PROJ/issues/4711>`_)
+
+  Helps for example for ``EPSG:5705`` (Baltic 1977 height) to ``EPSG:5706`` (Caspian depth)
+  by using intermediate operation from Baltic 1977 height to Caspian *height*
+
+* :program:`gie`: various fixes around crs_src/crs_dst support and bootstrap
+  test/gie/epsg_grid.gie and test/gie/epsg_no_grid.gie(`#4740 <https://github.com/OSGeo/PROJ/issues/4740>`_)
+
 9.8.0
 ++++++++++++++++++++
 *March 2nd 2026*