.. SPDX-FileCopyrightText: 1992-2026 NWO-I/SRON Space Research Organisation Netherlands
..
.. SPDX-License-Identifier: CC-BY-4.0

News
====

2026-08-27 Alpha version update to 3.99.02
------------------------------------------

Over the summer we added some more features and fixed some bugs.
We have an intermediate release of version 3.99.02 which
includes these. These items were added or fixed:

- Updates to the Fortran API and documentation
- Added plotting of line IDs
- Added data ogip command
- Update of ogiptospex interface
- Fixed bug in amol model
- Add plot components plot types
- Add cnts command for observed counts stats
- Multiple smaller bugs

----

2026-06-05 First alpha release of SPEX 4.0
------------------------------------------

We are happy to announce that we released the first version of 
SPEX version 4.0 for testing. Since 2022, we have been working
on the source code structure in SPEX and have made it modular.

Most of the user interfaces have remained the same, but under the
hood, the structure of SPEX changed completely. The SPEX 
functionality has been organised in libraries with their own
API interfaces. This makes it possible to build other software 
on top of SPEX. The API documentation will be available later in
2026.

This first version of SPEX4 has been tested internally at SRON,
but it is likely that not all functionality works perfect yet.
In the coming months, we hope to receive feedback and bug reports
from the community and iron out the remaining problems.

Please be careful using SPEX4 for scientific publications until
this version is considered stable. Please verify your result 
against SPEX 3.08.03 to be sure.