- in-place migration
- transmogrifier pipeline
- other (please specify in comments)
For existing old sites (4.x), we have migrated the sites to 5.1.x using transmogrifier, and we are right now testing to migrate them in-place to 5.2.
For new sites, we started the development with the beta and RC versions of 5.2 directly on top of python 3.
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