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1 | 1 | # PROJ Release Notes |
2 | 2 |
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| 3 | +## 9.8.1 |
| 4 | + |
| 5 | +### Warning |
| 6 | + |
| 7 | +It was discovered after the PROJ 9.8.0 release that several EPSG updates introduced |
| 8 | +after EPSG v12.033 - notably the introduction of national realizations of ETRS89 |
| 9 | +(ETRS89-XXX […] where XXX is the 3-letter ISO country code) - caused backward |
| 10 | +incompatibilities in some workflows involving the ETRS89 CRS. |
| 11 | + |
| 12 | +In particular, transformations between ETRS89 and national CRSs based on other |
| 13 | +datums are known to be affected for Austria, Belgium, Catalonia, the Netherlands, |
| 14 | +Romania, and Serbia. See #4736 for more details. |
| 15 | + |
| 16 | +While we intend to resume tracking the latest EPSG releases in future PROJ |
| 17 | +versions, the safest solution identified so far to address these regressions is to |
| 18 | +**revert the EPSG related content of its database from EPSG v12.049 to v12.029**, |
| 19 | +where v12.029 was the version distributed with PROJ 9.7.1 |
| 20 | + |
| 21 | +As a consequence of this revert, the EPSG datum and CRS records introduced in |
| 22 | +PROJ 9.8.0, which are mostly related to the new ETRS89-XXX datum and CRS, are no |
| 23 | +longer available in PROJ 9.8.1. |
| 24 | + |
| 25 | +### Updates |
| 26 | + |
| 27 | +* Database: **Revert content from EPSG v12.049 to v12.029** (#4741). |
| 28 | + See above warning for more details. |
| 29 | + |
| 30 | +* CMake: handle deprecated SQLite::SQLite3 target in CMake 4.3 (#4694) |
| 31 | + |
| 32 | +### Bug Fixes |
| 33 | + |
| 34 | +* Make sure that epoch is set in more scenarios of time-dependent transformations (#4688) |
| 35 | + |
| 36 | +* pj_obj_create: use database context if already open for grid name resolution (#4703) |
| 37 | + |
| 38 | +* Chain vertical CRS transformations through intermediate same-datum vertical CRS (#4711) |
| 39 | + Helps for example for **EPSG:5705** (Baltic 1977 height) to **EPSG:5706** (Caspian depth) |
| 40 | + by using intermediate operation from Baltic 1977 height to Caspian *height* |
| 41 | + |
| 42 | +* gie: various fixes around crs_src/crs_dst support and bootstrap |
| 43 | + test/gie/epsg_grid.gie and test/gie/epsg_no_grid.gie (#4740) |
| 44 | + |
3 | 45 | ## 9.8.0 |
4 | 46 |
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5 | 47 | ### Updates |
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