A new version of the sp package, 2.0-0, has been published on CRAN. This new 
version defaults to using the sf package rather than the rgdal package, and 
deprecates use  of the rgeos package. These changes are described in 
https://r-spatial.org/r/2023/05/15/evolution4.html, and lead up to the planned 
archiving of the retiring packages: maptools, rgdal and rgeos in October 2023. 
This version issues invasive start-up messages in order to alert users to 
impending changes; maintainers of affected packages have already been warned.

Roger Bivand
Emeritus Professor
Norwegian School of Economics
Postboks 3490 Ytre Sandviken, 5045 Bergen, Norway
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