Update dataStandards.md

dataStandards.md

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 ## The obs4MIPs data specifications
 
-The obs4MIPs data specifications (ODS) provide the detailed technical alignment between CMIP standard model output and obs4MIPs-compliant products. [ODS2.1](docs/ODSv2p1.pdf) has been used to prepare obs4MIPs-compliant datasets during much of the evaluation stage of CMIP6.  
+The obs4MIPs data specifications (ODS) provide the detailed technical alignment between CMIP standard model output and obs4MIPs-compliant products. The most recent version, [ODS2.5](../docs/Obs4MIPsDataSpecifications2.5_Finalized.pdf), was finalized 15 April 2024. Refinements to ODS can be expected to ensure alignment with CMIP7.
 
-Currently, an updated version of ODS is being developed to improve the transparency of dataset preparation.  Comments are welcome (obs4MIPs-admin@llnl.gov) on [this draft](docs/Obs4MIPsDataSpecifications2.5_NEARFINAL-noedits.pdf), which is expected to be finalized in early 2024. 
+Gleckler, P., Taylor, K. E., Durack, P. J., Nadeau, D., Biard, J. C., Elsaesser, G., Ferraro, R., Finkensieper, S., Hassler, B., Manaster, A., Mears, C., Pinnock, S., Stevens, S., Tuma, M., Turner, B., Waterfall, A., & Willet, K. M. (2024). Obs4MIPs Data Specifications version 2.5 (ODS2.5) (2.5). Zenodo. https://doi.org/10.5281/zenodo.11500474
 
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+Questions and comments are always welcome (obs4MIPs-admin@llnl.gov).